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Q.
Which of the following salts will give highest pH in water?
NTA AbhyasNTA Abhyas 2022
Solution:
$\text{N}\text{a}_{2}\text{C}\text{O}_{3}$ 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.