The volume of water to be added to 100cm3 of a 0.5 N H2SO4 to get a decinormal solution is:
A
200cm3
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B
300cm3
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C
400cm3
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D
500cm3
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Solution
The correct option is C400cm3 As per the concept of dilution, N1V1=N2V2
Decinormal means that the normality =0.1N (0.5×100)=(0.1×V2) V2=500cm3
So, the volume of water added should be (500−100)cm3=400cm3