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How many grams of 40% pure sodium hydrox...

How many grams of 40% pure sodium hydroxide is dissolved in 0.5 M, 250 ml NaOH solution?

A

5 gm

B

2 gm

C

12.5 gm

D

4 gm

Text Solution

Verified by Experts

The correct Answer is:
C
Moles of pure NaOH = `0.5xx0.25=0.125`
Weight = 5 gm
100 gm impure = 40 gm pure
`? "le" 5 gm = 12.5 gm`
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