MHT CET Chemistry question

If 20 mL of 0.4 NaOH solution completely neutralizes 40 mL of a dibasic acid, the molarity of the acid solution is:

Answer: (A)

Solution

N(acid) × 40 = 0.4 × 20 gives N = 0.2 N, and for a dibasic acid M = N/2 = 0.1 M; 0.2

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Question ID VK-041274