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Question
A salt whose aqueous solution will have a pH of more than 7 will be ______.
Options
K2CO3
K2SO4
NaCl
NH4Cl
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Solution
A salt whose aqueous solution will have a pH of more than 7 will be K2CO3.
Explanation:
A pH of more than 7 indicates that the aqueous solution is basic or alkaline. Potassium carbonate (K2CO3) is a basic salt formed from a strong base (KOH) and a weak acid (H2CO3). When dissolved in water, carbonate ions undergo anionic hydrolysis, releasing excess hydroxide ions (OH−), thereby raising the pH above 7.
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