Question

The aqueous solution of $N{a}_{2}S{O}_4$ will have $pH$:

• A. equals to 7
• B. less than 7
• C. greater than 7
• D. zero

Answer 1

Answer: (A)

equals to 7

Sodium sulfate is a neutral salt which forms aqueous solutions with pH of 7. The neutrality of such solutions reflects the fact that sulfate is derived from strong acid sulfuric acid. Sodium sulfate reacts with sulfuric acid to give the acid salt sodium bisulfate.