1.

The pH of the solution obtained by mixing 10 mL of 10–1 N HCl and 10 mL of 10–1 N NaOH is:(a) 8 (b) 2(c) 7 (d) None of these

Answer»

Correct option: (c) 7

Explanation: 

Meq. Of HCl = 10 x 10–1 = 1

Meq. Of NaOH = 10 x 10–1 = 1

Thus, both are neutralized and 1 Meq. Of NaCl (a salt of strong acid and strong base)

which does not hydrolyse and thus, pH = 7.



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