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A Level Chemistry Paper 2 Questions and Answers, Exams of Chemistry

A comprehensive set of questions and answers related to a level chemistry paper 2. It covers a wide range of topics, including chemical reactions, bonding, thermochemistry, kinetics, organic chemistry, and environmental chemistry. The questions are structured in a way that allows students to test their understanding of key concepts and principles in chemistry. The answers provided are detailed and accurate, making this document a valuable resource for students preparing for their a level chemistry examinations. Particularly useful for students who want to practice their problem-solving skills, review important chemistry concepts, and gain a deeper understanding of the subject matter.

Typology: Exams

2023/2024

Available from 08/01/2024

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john-master-2 🇺🇸

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A level Chemistry Paper 2 Questions and

Answers Latest Update

  1. Silver nitrate+ nitric acid + chloride ions - Correct Answer White precipitate
  2. Silver nitrate+ nitric acid + bromide ions - Correct Answer Cream precipitate
  3. Silver nitrate+ nitric acid + iodide ions - Correct Answer Yellow precipitate
  4. Substances that decolorize bromine water - Correct Answer Alkenes
  5. Electrophiles - Correct Answer Electron pair acceptors, attracted to electrons e.g. H+
  6. Nave and Nalco - Correct Answer Produces misty fumes with conk sulphuric acid
  7. Nab - Correct Answer Produces misty and orange/brown fumes with conk sulphuric acid
  8. Nail - Correct Answer Produces misty fumes, purple vapor, bad egg smell with conk sulphuric acid
  9. Le hoteliers principle - Correct Answer If a factor affecting the equilibrium is changed the equilibrium will shift to oppose this change
  10. Enthalpy change - Correct Answer The overall temperature change at a constant pressure of a reaction
  11. Hess's law - Correct Answer The overall enthalpy change of a reaction at a constant pressure is independent to the route taken
  12. Why does E-Z isomerism occur - Correct Answer Due to the restriction of the double carbon bond
  13. Positional isomers - Correct Answer The functional group is attached to a different carbon
  14. Functional group isomers - Correct Answer Same atoms arranged into different functional groups e.g. cyclohexane and hexane
  1. Dative covalent bond - Correct Answer A bond of shared electrons where both electrons are supplied from one of the atoms
  2. Kelvin - Correct Answer Temperature in degrees Celsius + 273
  3. Meters cubed - Correct Answer The unit of volume in ideal gas equation
  4. Number of particles= - Correct Answer Number of moles x Avogadro’s constant
  5. Linear - Correct Answer 2 bonding pairs, 0 lone pairs, 180 bond angle
  6. Trigon planar - Correct Answer 3 bonding pairs, 0 lone pairs, 120 bond angle
  7. Tetrahedral - Correct Answer 4 bonding pairs, 0 lone pairs, 109.5 bond angle
  8. Trigon pyramidal - Correct Answer 5 bonding pairs, 0 lone pairs, 90 and 120 bond angle
  9. Pyramidal - Correct Answer 3 bonding pairs, 1 lone pair, 107 bond angle
  10. Bent/ v shaped - Correct Answer 2 lone pairs, 2 bonding pairs, 104.5 bond angle
  11. Octahedral - Correct Answer 6 bonding pairs, 0 lone pairs , 90 bond angle
  12. T shaped - Correct Answer 2 lone pairs, 3 bond pairs
  13. Electronegativity - Correct Answer The power of an atom to attract the pair of electrons in a covalent bond
  14. Standard conditions - Correct Answer 100kPa and 298k
  15. Standard enthalpy of formation - Correct Answer The enthalpy change when 1 mole of a substance is formed from its elements under standard conditions
  16. Standard enthalpy of combustion - Correct Answer The enthalpy change when 1 mole of a substance undergoes complete combustion under standard conditions
  17. Standard enthalpy of atomization - Correct Answer The enthalpy change when 1 mole of gaseous atoms of a substance are formed from the substance in its standard state under standard conditions
  18. Standard enthalpy of neutralization - Correct Answer The enthalpy change when 1 mole of water is produced by the reaction of an acid and a base under standard conditions
  1. Mean bond enthalpy - Correct Answer The average energy needed to break a certain type of bond over a range of compounds
  2. Collision theory - Correct Answer For a reaction to take place particles have to collide with the right orientation and sufficient energy
  3. Activation energy - Correct Answer The minimum amount of energy a particle requires for a reaction to take place
  4. Catalyst - Correct Answer A substance that increases the rate reaction without being chemically changed or used up in the process
  5. Reaction rate - Correct Answer The change in concentration or amount of a reactant or product over time
  6. Carbonate - Correct Answer Produce CO2 when hydrochloric acid added
  7. Test for Sulfates - Correct Answer Add dilute HCl and barium chloride- White precipitate if positive
  8. Stereoisomers - Correct Answer The same structural formula but a different arrangement in space
  9. Alkanes - Correct Answer Saturated hydrocarbons
  10. Alkenes - Correct Answer Unsaturated hydrocarbons
  11. Thermal cracking - Correct Answer Form of cracking that takes place at high temperature and high pressure, produces a lot of alkenes
  12. Catalytic cracking - Correct Answer Form of cracking that takes place at high temperature and slight pressure with a zeolite catalyst.
  13. Knox CO Carbon - Correct Answer Pollutants produced from internal combustion engines
  14. Platinum - Correct Answer Catalyst in a catalytic converter
  15. Calcium oxide or carbonate - Correct Answer Used to neutralize sculpture dioxide in flue gases
  16. Calcium Sulfate - Correct Answer The salt made when calcium carbonate/oxide reacts with sculpture dioxide
  17. Tertiary - Correct Answer The most stable structure of a carbocation
  1. Primary - Correct Answer The least stable structure of a carbocation
  2. Plasticizer - Correct Answer Molecule that pushes polymer chains apart making them more flexible
  3. Rigid PVC - Correct Answer Used to make drain pipes and window frames
  4. Plasticized PVC - Correct Answer Used to make cable insulation, tiles and clothing
  5. Conditions for steam hydration ethanol production - Correct Answer Hydration of ethane by steam at 300 degrees, pressure 60atm
  6. Catalyst for ethanol steam hydration production - Correct Answer Phosphoric acid catalyst
  7. Conditions for fermentation of glucose - Correct Answer Yeast anaerobic conditions, 30-40 degrees c
  8. Biofuel - Correct Answer Fuel that's made from biological material that's recently died
  9. Fossil fuels used for machinery for transport, harvesting - Correct Answer Reason why bioethanol is not fully carbon neutral
  10. Primary alcohols - Correct Answer Oxidized to aldehydes, further oxidized to carboxylic acids
  11. Secondary alcohols - Correct Answer Oxidized to ketones
  12. Tertiary alcohols - Correct Answer Not oxidized too stable
  13. Potassium dichromate - Correct Answer Oxidizing agent for alcohols
  14. An aldehyde - Correct Answer Turns feelings solution from blue to red when warmed with...
  15. A ketone - Correct Answer Fehling’s solution stays blue when warmed with...
  16. Aldehyde not ketone - Correct Answer Produces a silver mirror when warmed with tolled reagent
  17. Fingerprint region - Correct Answer Part of an infrared spectrum unique to that particular compound
  1. Greenhouse effect - Correct Answer Gases absorb infrared radiation in the atmosphere and re-emit some of it back towards the earth
  2. Hemolytic fission - Correct Answer The equal splitting of electrons in a covalent bond to produce free radicals
  3. Nucleophile - Correct Answer Electron pair donor