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Question

What volume of 0.1 M H2SO4 is required in litres to neutralize completely 1 litre of a solution containing 20 g of NaOH?

A
5.0
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B
0.5
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C
2.5
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D
10.0
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Solution

The correct option is B 2.5
Molarity of NaOH=Weight×1000molar mass×V=20×100040×1000=0.5

Reaction: H2SO4+2NaOHNa2SO4+2H2O

If 1 is for H2SO4 and 2 is for NaOH

M1V11=M2V22

0.1×V1=0.5×12

V1=2.5 L.

Hence, option C is correct.

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