Chemistry Practice Problems Weak Acids Practice Problems Solution: The term “Ka for the ammonium ion” describes the e...

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Solution: The term “Ka for the ammonium ion” describes the equilibrium constant for which of the following reactions? 1. NH3 + H3O+ ⇌ NH4+ + H2O 2. NH3 + H2O ⇌ NH4+ + OH− 3. NH4+ + OH− ⇌ NH3 + H2O  4. NH4+ + H2O ⇌ NH3 + H3O+ 5. The term is misleading, because the ammonium ion is not an acid. 6. NH4Cl(solid) + H2O ⇌ NH4+ + Cl−

Problem

The term “Ka for the ammonium ion” describes the equilibrium constant for which of the following reactions?

1. NH3 + H3O+ ⇌ NH4+ + H2O

2. NH3 + H2O ⇌ NH4+ + OH

3. NH4+ + OH ⇌ NH3 + H2

4. NH4+ + H2O ⇌ NH3 + H3O+

5. The term is misleading, because the ammonium ion is not an acid.

6. NH4Cl(solid) + H2O ⇌ NH4+ + Cl