CHEMISTRY 121A - EXAM 2: STUDY
GUIDE (UNR)CORRECT 100%.
Electrolytes - ANSWERConduct electricity, like NaCl, a salt
Strong Electrolytes - ANSWERStrong Acids and Strong Bases, dissociate
completely in water
Weak Electrolytes - ANSWERWeak Acids and Weak Bases dissociate partially in
water
Weak Acid - ANSWERCompound that starts with H but is not one of the 7 strong
acids
Memorize: CH3COOH (acetic acid)
Weak Bases - ANSWERUsually contains Nitrogen
Memorize: NH3 (ammonia)
Seven Strong Acids - ANSWERHCl, HClO3, HClO4, HBr, HI, HNO3, H2SO4
(Three have Cl in it, other four remember "BINS", B in HBr, I in HI, N in HNO3, and S
in H2SO4)
Strong Bases - ANSWERAlkali metal (Group 1) hydroxides, Ca(OH)2, Sr(OH)2, and
Ba(OH)2
Nonelectrolytes - ANSWERMolecular Compounds, like C12H22O11
Precipitation Reactions (Metathesis or Double Replacement) - ANSWERForms a
precipitate (solid)
Neutralization Reaction (Acid + Base) - ANSWERForms water and salt
Exceptions:
1) sulfides + acid -> H2S(g) + salt
2) carbonates + acid -> CO2(g) + H2O(l) + salt
Oxidation-Reduction Reactions (Redox or Single Replacement) -
ANSWERRemember: LEO says GER
Oxidation - ANSWERLoss of electrons (increase in + charge)
Reduction - ANSWERGain in electrons (decrease in + charge)
