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  4. 2.5 cm 3 of 0.2 M H 2 SO 4 solution is diluted to 0.5 dm 3 Find normality of the diluted solution:

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Q. $2.5\, cm ^{3}$ of $0.2 M H _{2} SO _{4}$ solution is diluted to $0.5\, dm ^{3}$ Find normality of the diluted solution:

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Solution:

$V _{1}=2.5 \,cm ^{3}=2.5 \times 10^{-3}\, dm ^{3}$

$M _{1}=0.2\, M$

$N _{1}=2 \times M _{1}=0.4 \,N$

$V _{2}=0.5 \,dm ^{3}$

$N _{1} V _{1}= N _{2} V _{2}$

$0.4 \times 2.5 \times 10^{-3}= N _{2} \times 0.5$

$N _{2}=2 \times 10^{-3}=0.002 \,N$