Ok first of all, you need to work out the acid and base that formed this salt.
For NaHSO4, H2SO4 is a strong acid, and NaOH is a strong base, and so the salt formed from these two, NaHSO4, is a neutral salt.
For CaCl2, it came from HCl, a strong acid, and Ca(OH)2, a strong base, and therefore...