Some Basic Concepts Of Chemistry Question 232

Question: 0.16 g of dibasic acid required 25 ml of decinormal NaOH solution for complete neutralisation. The molecular weight of the acid will be [CPMT 1989]

Options:

A) 32

B) 64

C) 128

D) 256

Show Answer

Answer:

Correct Answer: C

Solution:

Dibasic acid NaOH; $ N _1V _1=N _2V _2 $

$ \frac{W}{E}\times 1000=\frac{1}{10}\times 25 $ ; $ \frac{0.16}{E}\times 1000=\frac{25}{10} $

$ M=2\times E=2\times 64=128 $ .



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