Question

what is the normality of 4% (w/v) solution of NaOH

Answer 1

No of g eq=4÷40 =0.1
N= 0.1÷100×1000= 1N

Answer 2

Answer:

The normality of 4% (w/v) solution of NaOH is 1 N.

Explanation:

4% (w/v) solution of NaOH means that 4 grams of NaOH in 100 mL of water.

$Normality=\frac{\text{Massof NaOH}}{\text{equivalent mass of NaOH}\times \text{Volume of solution in Liter}}$

Equivalent molar mass of NaOH =$\frac{40 g/mol}{1}=40 g/mol$

$Normality=\frac{4 g}{40 g/mol\times 0.1 L}=1 N$

The normality of 4% (w/v) solution of NaOH is 1 N.