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CHEM 1020 Final Exam Questions with

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what is a major difference between organic and inorganic compounds? - Correct Answer-organic contain carbon what is the reason why there are so many organic compounds? - Correct Answer- carbon atoms can form stable covalent bonds with other carbon atoms the vast number of organic compounds is due to the unique chemistry of carbon. this chemistry involves - Correct Answer-formation of long chains& isomerism Which applies to the manner in which carbon bonds in alkanes? - Correct Answer-the bonds are formed with carbon using an sp3 configuration functional groups are - Correct Answer-to organic chem as polyatomic ions are to inorganic chem, are chemically bound to each other in order to develop larger molecules the alkanes represent one family of organic compounds - Correct Answer-that is composed of carbon and hydrogen formulas of organic compounds - Correct Answer-CH3CH2COOH, CH3CH2OH, CH3CH3CH which is an alcohol - Correct Answer-CH3CH2OH what is meant by the term "saturated" when describing hydrocarbons - Correct Answer- they are saturated with hydrogen and only have single bonds between carbons correct statements on the naming of organic compounds - Correct Answer-many compounds have been known long enough to have common names, the naming system of organic compounds is set by IUPAC rules, & the naming system requires that the longest carbon chain must always be found cycloalkanes are - Correct Answer-NOT: compounds that have a flat molecular structure, saturated hydrocarbons, or compounds that cannot have hydrogens removed and replaced by chlorine which of the following term applies to the alkanes - Correct Answer-hydrophobic

what is a characteristic shared by the alkanes - Correct Answer-flammable which of the following is a use for alkanes? - Correct Answer-a. fuel b. lubricant c. solvent D. MORE THAN ONE IS CORRECT which of the following represent a saturated hyrdocarbon - Correct Answer-C2H All of the members of the alkane series of hydrocarbons have the general formula __ - Correct Answer-CnH2n+ which of the following compounds can exhibit structural isomerism? - Correct Answer- butane how many structural isomers are possible for compounds with a molecular formula C4H10 - Correct Answer- which is a structural isomer of 2-methylbutane - Correct Answer-pentane how many structural isomers of C7H16 have 5 carbon atoms in the longest carbon chain - Correct Answer- A compound is incorrectly named 2-ethyl 1-2,4 - dimethylhexane. What would be the correct IUPAC name - Correct Answer-3,3,5-trimethylheptane A general formula for cycloalkanes is - Correct Answer-CnH2n which of the following cycloalkanes contains a total of 12 carbon atoms - Correct Answer-1-ethyl-2methylcyclononane how many isomers (structural and geometric) exist for dibromocyclopentane (C5H8Br2)

• Correct Answer- how many isomers exist for dichlorocyclopropane (C3H4Cl2) - Correct Answer- an alkane with 10 carbon atoms is a __ @ room temp - Correct Answer-liquid Alkanes are ___ in water and ___ than water - Correct Answer-insoluble, less dense complete combustion of pentane produces - Correct Answer-CO2 & H2O Alkanes react readily with - Correct Answer-NOT: sodium hydroxide, hydrochloric acid, sulfuric acid

cis-1,2 dimethylcyclohexane and trans- 1,2-dimethylcyclohexane are examples of what type of isomers? - Correct Answer-stereoisomers & geometric isomers You arrive home from class to find your roommate complaining of a headache, dizziness, and nausea. Upon further investigation you believe they may have carbon monoxide poisoning. What should be the first step taken? - Correct Answer-remove the victim to fresh air Complete combustion of an alkane produces what products - Correct Answer-CO2 and H2O Due to the method used for treatment, which of the following might be found in drinking water - Correct Answer-chloromethane which of the following compounds would be classified as inorganic - Correct Answer- NaC2H3O An unknown substance is a liquid at room temperature, reacts readily with oxygen, and is a nonconductor. which of the listed compounds might this substance be? - Correct Answer-C6H 3 physical properties shown below beside different alkane series. Which of the series is listed in the order of increase (lowest to highest) for the corresponding property - Correct Answer-Density: C4H10<C5H12<C8H how many hydrogen atoms are needed to complete the following structure? C=C-- N -- C - Correct Answer- Organic chemistry is the branch of chemistry involved with carbon based compounds. carbon is a member of which group of elements on the periodic table? - Correct Answer-representative what is the most common type of bond found in organic molecules? - Correct Answer- covalent the condensed structural formula for 2,3-dimethylbutane would be? - Correct Answer- CH3CH(CH3)CH(CH3)CH given the fact that organic compounds like waxes and oils have low melting points and make good lubricants, its a good bet that the main type of inter particle interaction is due to - Correct Answer-dispersion forces name a difference between a saturated and an unsaturated hydrocarbon - Correct Answer-saturated do not contain multiple bonds between carbons, but unsaturated do contain multiple bonds

which characteristic relates to alkenes but not the other hydrocarbon families? - Correct Answer-double bonds what number would be used to indicate the double bond position in the IUPAC name for CH3-CH2-CH=CH-CH3 - Correct Answer- which of the following can exhibit geometric isomerism? - Correct Answer-1-bromo-1- propene which of the following represents an addition reaction? - Correct Answer-HX + C4H8-> C4H9X select the major product that would result from the reaction below CH3--CH=CH2+ H2O - Correct Answer-CH3CH(OH)CH select the major product that would result from the reaction below CH3CH2CH=CH2 + HBr - Correct Answer-CH3CHBrCH2CH which is the formula for an alkene - Correct Answer-CH3CHCH what is the formula for an alkyne - Correct Answer-CH3CH2CCH what is a difference between butane and butene - Correct Answer-the presence of a double bond which is a difference between butene and cyclobutene - Correct Answer-cyclobutene is missing more hydrogens than is butene which is a difference between butyne and cyclobutyne - Correct Answer-cyclobutyne does not exist which of the following is the correct IUPAC name for the compound CH2-C(TRIPLE BOND)C-CH2-CH2-Br - Correct Answer-5-bromo-2-pentyne the addition of two moles of hydrogen to an alkyne produces an - Correct Answer- alkene acetylene is commercially useful as a fuel for torches and as - Correct Answer-a starting material for plastics what is the characteristic of aromatic compounds that is responsible for them being named aromatic compounds - Correct Answer-these compounds contain a benzene ring or structural relative the benzene ring as a branch is called a __ group - Correct Answer-phenyl

another acceptable name for 1-ethyl-3-methylbenzene is - Correct Answer-m- ethyltoluene a major source of aromatic compounds is - Correct Answer-coal tar which of the following is a useful organic solvent - Correct Answer-toluene naphthalene is used as - Correct Answer-moth repellent identify the statement about lycopene that is true - Correct Answer-lycopene gives watermelon their red color which characteristic of alkenes and alkynes, but not a characteristic of alkanes - Correct Answer-alkanes have only single bonds between carbons which of the following will not reduce your cancer risk - Correct Answer-cooking meats @ high temps lycopene has been shown to prevent certain types of cancer. which of the following is not a good source of lycopene - Correct Answer-green beans color is a property associated with which type of hydrocarbon - Correct Answer-alkenes what would the reaction of hydrogen fluoride with ethene be an example of - Correct Answer-hydrohalogenation which of the following could exhibit cis/trans isomerism - Correct Answer-2-butene what type of hybridization is associated with alkyne bonding? - Correct Answer-sp what type of hybridization is associated with the carbons in ethene - Correct Answer- sp According to Maokovnikov's rule, when 3-methyl-1-butene undergoes and addition reaction with Hal, the chlorine will end up on which main chain carbon - Correct Answer-

the ability to detect light is based, in part, to a change of one from of retinal to another. Specifically, what is this change - Correct Answer-a cis to trans conversion the reaction of bromine with an alkene can be detected by which of the following - Correct Answer-loss of bromine solution color what is the group that distinguishes alcohols from other classes of compounds - Correct Answer-hydroxy

identify the correct statement with respect to the oxygen found in an alcohol as compared to the oxygen found in an ether - Correct Answer-oxygen in an alcohol is directly associated with a hydrogen; the oxygen in an ether is not chemically bound to a hydrogen to which class of compounds does cholesterol belong - Correct Answer-an alcohol compare glycerol with ethanol - Correct Answer-glycerol is a long chain alcohol; ethanol is a short chain alcohol which of the following compounds is correctly classified as a tertiary alcohol - Correct Answer-2-methyl-2-butanol which of the following is a secondary alcohol - Correct Answer-(CH3)2CHOH which of the following would be only very slightly soluble in water - Correct Answer-1- hexanol which compound would be most soluble in water - Correct Answer-CH3-CH2-CH2-CH2- OH which compound would have the highest boiling point - Correct Answer-CH3-CH2-CH2- CH2-OH which of the following would be made from an alcohol by a dehydration reaction - Correct Answer-alkene what conditions must be used to carry out the following reaction 2CH3CH2CH2-OH --> CH3CH2-O-CH2CH3 +H2O - Correct Answer-H2SO4, 140 C which of the following alcohols would be the most difficult to oxidize - Correct Answer- CH3C(OH)(CH3) which of the following is used in automobile antifreeze - Correct Answer-ethylene glycol which of the following is contained in rubbing alcohol - Correct Answer-CH2CH(OH)CH which alcohol is found in alcoholic beverages - Correct Answer-ethyl alcohol glycerol is used as - Correct Answer-moistening agent the phenol used in some mouthwashes and throat lozenges is - Correct Answer- hexylresorcinol a phenol used as an antioxidant food additive in vegetable oil is - Correct Answer- Vitamin E

when phenol dissolves in water, it functions as - Correct Answer-a weak acid the phenol in ivy sap that causes the skin on some people to blister is - Correct Answer- urushiol how can the solubility of alcohols be estimated? - Correct Answer-ratio of hydroxyl groups to carbons the IUPAC name f ethyl methyl ether is - Correct Answer-1-methoxyethane ethers are __ in water - Correct Answer-slightly soluble ethers generally have boiling points __ those of comparable alcohols - Correct Answer- below the chemical reactivity of ethers is most similar to which of the following - Correct Answer-alkanes oxidation of a thiol produces a - Correct Answer-disulfide an example of a heavy metal ion which reacts with R-SH is - Correct Answer-Pb2+ which of the following would you expect to be foul smelling - Correct Answer- CH3CH2CH2SH which compound would be the least soluble in water - Correct Answer-CH3-CH2-CH2- CH2-CH dehydration of an alcohol will produce an - Correct Answer-alkene oxidation of a tertiary alcohol will produce an - Correct Answer-no reaction an infant with fetal alcohol syndrome could exhibit which of the following characteristics

• Correct Answer-thin upper lip, short nasal bridge, mental retardation thiols create the unpleasant odor associated with a skunk. which of the general forms represents a thiol - Correct Answer-R-SH which of the following is the most soluble in water - Correct Answer-1-pentanol the product of the following reaction would be what 2CH3CH2SH + (O) - Correct Answer-CH3CH2S-SCH2CH in the acid catalyzed dehydration of an alcohol, the acid catalyst - Correct Answer- protonates the -OH to form an intermediate

what is the IUPAC name for HOCH2CHOHCH2OH - Correct Answer-1,2,3-propanetriol which of the following compound classes is most likely to have an offensive odor - Correct Answer-thiols one of the original anesthetics, diethyl ether has been replaced by more suitable substances. of the many reasons, which of the following properties of ethers would account for it no longer being used in modern operating rooms - Correct Answer- flammability oxidation of a secondary alcohol will produce a - Correct Answer-ketone testosterone, the principle male sex hormone, is shown below. it would be best classified as which of the following - Correct Answer-polyfunctional what is the group that distinguishes aldehydes from most other classes of compounds - Correct Answer-carbonyl what structural characteristic is shared by the aldehydes and ketones - Correct Answer- both contain a carbonyl carbon what are the risks of constant sunbathing - Correct Answer-more than one response is correct in the IUPAC nomenclature system, the name of which of the following would end in -al

• Correct Answer-an aldehyde the name 4,5-dichlorocyclohexanone should be - Correct Answer-3,4- dichlorocyclohexanone to what characteristics do aldehydes and ketones owe their ability to hydrogen bonds - Correct Answer-having a doubly bonded oxygen what is the consequence of the ability of aldehydes and ketones to form hydrogen bonds - Correct Answer-they both have BPs less than the comparable weight alcohol assuming that the molecular weights are comparable, which of the following compounds would toy expect to be the highest boiling - Correct Answer-alcohol which of the following products is formed when hydrogen is reacted with 3-methyl-2- butanone - Correct Answer-secondary alcohol which of the following is a requirement of Pollens' reagent - Correct Answer-the glassware should be grease free

which is a test for the presence of an aldehyde - Correct Answer-Benedict's reagent a positive benedicts test is indicated by the formation of what - Correct Answer-Cu2O what is the reason for norethynodrel's ability to function as a contraceptive - Correct Answer-it is capable of mimicking progesterone establishing a false pregnancy which of the following is, in an injectable form, used for contraception - Correct Answer- progestin predict the resultant compound class when an aldehyde is hydrogenated - Correct Answer-alcohol hemiacetals are - Correct Answer-the unstable product of the oxidation of an aldehyde hemiacetals are - Correct Answer-unstable compounds that convert to acetals in the presence of of an alcohol and an acid to what class of compounds does glucose belong - Correct Answer-cyclic hemiacetal what is the major difference between a cyclic hemiactel and a cyclic acetal - Correct Answer-the cyclic hemiacetal is an alcohol and the cyclic acetal is an ether which reaction requires platinum as a catalyst - Correct Answer-reduction of an aldehyde or ketone what is the result of a hydrolysis reaction - Correct Answer-splitting of the molecule into the component substances what is the flavoring for margarine - Correct Answer-biacetyl which of the following is an aldehyde flavoring agent - Correct Answer-vanillin which of the following is an important organic solvent - Correct Answer-acetone which of the following is most toxic - Correct Answer-formaldehyde which of the following would you expect to be most flammable - Correct Answer- acetone overdose of __ during pregnancy has proven to cause birth defects - Correct Answer- Vitamin A ___ is the active ingredient in Heet and Methacin, and Pain Doctor, which are pain relieving creams that are over the counter preparation - Correct Answer-capsaicin

which of the following is a water soluble, organic solvent - Correct Answer-acetone oxidation of an aldehyde will produce - Correct Answer-a carboxylic acid hydrogenation of an aldehyde will produce - Correct Answer-a primary alcohol fully reacting an aldehyde with an alcohol will produce - Correct Answer-an acetal norethynodrel is a common drug used for birth control. Which of the following is NOT a common side affect associated with norethynodrel - Correct Answer-weight loss formaldehyde is a __ at room temp - Correct Answer-gas which of the following has the highest BP - Correct Answer-butanal which of the following properly ranks the relative aqueous solubility of each functional group - Correct Answer-alkene<ketone<aldehyde<alcohol which is NOT a proper IUPAC name - Correct Answer-1-pentanone what is the common name for 2-butanone - Correct Answer-methyl ethyl ketone which of the following is the substance that causes the symptoms associated with a hangover - Correct Answer-ethanal the intermediate product of two moles of a primary alcohol and one mole of a ketone would be an - Correct Answer-hemiketal which of the following is a condensed structural formula for an aldehyde - Correct Answer-RCHO which of the following substances is an integral portion of embalming fluid - Correct Answer-methanal which of the following is an ingredient in some inhalants? It has a characteristic medicinal odor - Correct Answer-camphor which of the following substances can be used to produce a chemical tan - Correct Answer-dihydroxyacetone which of the following substances is found in the rinds of lemons, oranges, and lime - Correct Answer-citral which of the following is used to represent an organic acid - Correct Answer-COOH

what acid is responsible for the stinging sensation from the bite of a fire ant - Correct Answer-formic acid what is a source of oxalic acid - Correct Answer-spinach the acids were among the first organic compounds studied. Why - Correct Answer- abundance which physical relationship is attributed to carboxylic acid - Correct Answer-the BP of carb. acids increases with the molecular weight what is the IUPAC name for 5-bromobenzoic acid - Correct Answer-3-bromobenzoic acid two molecules of carboxylic acid are joined together by two hydrogen bonds. This is referred to as an - Correct Answer-dimer which of the following conditions would favor the carboxylate ion instead of the carboxylic acid - Correct Answer-high pH what is the name of the potassium salt of m-ethylbenzoic acid - Correct Answer- potassium m-ethylbenzoate which of the following is used as a mold inhibitor in bakery goods - Correct Answer- calcium propionate which of the following is an ingredient in soaps - Correct Answer-sodium stearate the sodium salt of benzoic acid is used as - Correct Answer-a food preservative when a carboxylic acid reacts with alcohol, the organic product is an - Correct Answer- ester the pleasant, characteristic odor or fruit flavorings is often associated with the presence of - Correct Answer-esters the IUPAC name of the ester formed from butanoic acid and ethanol is - Correct Answer-ethyl butanoate what would be the products if ethyl stearate were to undergo hydrolysis - Correct Answer-the products would be ethanol and stearic acid the IUPAC name of the ester formed from methanol and benzoin acid is called - Correct Answer-methyl benzoate saponification is a chemical reaction - Correct Answer-that results in a soap

phosphate esters are prepared from - Correct Answer-phosphoric acid & alcohol nitrate esters are found in some - Correct Answer-explosives which of the following can react with alcohols to form esters - Correct Answer-more than one response is correct what is the consequence of the ability of aldehydes and ketones to form hydrogen bonds - Correct Answer- one of the original anesthetics, diethyl ether has been replaced by more suitable substances. of the many reasons, which of the following properties of ethers would account for it no longer being used in modern operating rooms - Correct Answer- flammability an alkane with 10 carbon atoms is a __ @ room temp - Correct Answer-liquid