Question

A dilute solution of $H_{2}S{O}_4$ is made by adding $5$ mL of $3$N $H_{2}S{O}_4$ to $245$ mL of water. Find the normality and molarity of the diluted solution.

Answer 1

$5ml$ of $3N{H}_2{SO}_4⟶245mlof{H}_{2}O$

The formula is

$N_1{V}_1=N_2{V}_{2}3\times 5=245\times N_2\frac{3\times 5}{245}=N_{2}0.0612=N_2$

Thus normality of the solution is $0.0612N$

$M=\frac{N}{n-factor}$

The n-factor for $H_2{SO}_4$ is $2$

$M=\frac{0.0612}{2}=0.0306M$

The normality of diluted solution is $0.0612N$

The molarity of diluted solution is $0.0306M$