Question

If $4$ g NaOH are dissolved in $100$ mL of aqueous solution, what will be the difference in its normality and molarity?

Answer 1

Molecular wight of $NaOH=23+16+1=40$
The molarity of NaOH solution is
$M=\frac{W_2\times 1000}{M{w}_2\times V_{sol}}=\frac{4\times 1000}{40\times 100}=1$ M.
Since, NaOH is monobasic acid its normality and molarity will be same.
Hence, the normality of NaOH solution is $1$ N.
Thus, there is no difference in the normality and molarity of NaOH solution.