(a) Identify (invent??) a salt which has a weak acid as it's cation and a weak base as its anion so that the salt would yield an acidic solution in water.
(b) Identify a salt (again with a weak acid as its cation and a weak base as it's anion) which would yield a basic solution in water.
(c) Identify a salt (again with a weak acid as its cation and a weak base as its anion) which would yield a neutral solution in water.