Download Chemistry 3202 Name: Acid-base Theory Problems Assignment 1

Chemistry 3202
Name:
Acid-base Theory Problems Assignment
1.
Use the modified Arrhenius theory to explain the following empirical observations.
a)
HCO3 forms a basic solution with water
b)
HSO4 forms an acidic solution with water
c)
CO32 forms a basic solution with water
d)
O2 forms a basic solution with water
2.
Write the 2 step equations to explain acid rain formed by SO3 (g).
3.
Identify the conjugate acid base pairs in each of the following reactions.
4.
a)
HF(aq) + SO42(aq)  F(aq) + HSO4(aq)
b)
CO32(aq) + CH3COOH(aq)  CH3COO(aq) + HCO3(aq)
c)
H3PO4(aq) + OCl(aq)  H2PO4(aq) + HOCl(aq)
d)
HCO3(aq) + HSO4(aq)  SO42(aq) + H2CO3(aq)
Name and write the formula of the conjugate base of each molecule or ion.
a)
b)
5.
c)
d)
H2SO4
HSO3
Name and write the formula of the conjugate acid of each molecule or ion.
a)
b)
6.
HCl
HCO3
NO2
OH
c)
d)
H2O
HCO3
Write equations to show how the hydrogen sulfide ion, HS , can be classified as amphoteric.
7.
8.
9.
Hydrofluoric acid ionizes in water to form fluoride ions.
a)
Write a balanced chemical equation for this reaction.
b)
Identify the conjugate acid-base pairs.
c)
Explain how you know whether or not you have correctly identified the conjugate acid-base
pairs.
Predict the direction for the following equations. State whether reactants or products are favoured,
and give reasons to support your decision.
a)
NH4+(aq) + H2PO4(aq)  NH3(aq) + H3PO4(aq)
b)
H2O(l) + HS(aq)  OH + H2S(aq)
Evidence indicates that the hydrogen carbonate ion is amphoteric. A sodium hydrogen carbonate
solution can neutralize a sodium hydroxide spill and also a hydrochloric acid spill.
a)
Write a net ionic equation for the reaction of aqueous hydrogen carbonate ions with the
hydroxide ions in solution. Label the reactants as acids or bases.
b)
Write a net ionic equation for the reaction of hydrogen carbonate ions with hydronium ions
from a hydrochloric acid solution. Label the reactants as acids or bases.
10.
11.
Predict the most likely acid base reaction that occurs in each of the following.
a)
Hydrofluoric acid and an aqueous solution of sodium sulfate are mixed.
b)
Strong acids, such as perchloric acid, have been shown to react quantitatively with strong
bases, such as sodium hydroxide.
c)
Methanoic acid (HCOOH) is added to an aqueous solution of sodium hydrogen sulfide.
Can ammonium nitrate fertilizer, added to water, be used to neutralize a hydrochloric acid spill?