Question

A $5$ molar solution of $H_2SO_4$ is diluted from 1 litre to a volume of 10 litres, the normality of the solution will be

• A. 1 N
• B. 0.1 N
• C. 5 N
• D. 0.5 N

Answer 1

Answer: (A)

1 N

Answer 2

$N _{1} V _{1}= N _{2} V _{2}$
Given, molarity of $H _{2} SO _{4}=5 M$,
$N _{1}=$ Molarity $\times$ basicity $=5 \times 2=10$
$V _{1}=1\, L,\, V _{2}=10\, L,\, N _{2}=?$
$N _{1} V _{1}= N _{2} V _{2}$
$10 \times 1= N _{2} \times 10$
$\therefore N _{2}=1\, N$