Classification of Reactions

Classify each of the following reactions as ion-combination, proton transfer, or electron-sharing. All are carried out in aqueous solution.

  1. NH4+ + OH- → NH3 + H2O
  2. NH4+ + H2O → H3O+ + NH3
  3. NH4Cl + AgNO3 → AgCl + NH4NO3
  4. NH4+ + NH2- → 2 NH3
  5. 2 HCl + Na2S → H2S + 2 NaCl
  6. 2 CH3CH2COOH + S-2 → H2S + 2 CH3CH2COO-
  7. H+ + NH3 → NH4+
  8. Ag+ + 2 NH3 → Ag(NH3)2+