Chemistry - Ionic Equilibrium Question with Solution | TestHub

$\text{N}{\text{a}}_2\text{C}{\text{O}}_3$will give highest pH in water because it is a salt of strong base and weak acid so aqueous solution is alkaline with pH more than 7. KCl, & NaCl are salts of strong acid & strong base so aqueous solution is neutral & pH is 7.$\text{CuS}{\text{O}}_4$is a salt of strong acid &weak base so aqueous solution is acidic with pH less than 7.