Question

4 grams of NaOH add to water and volume made up 250 ml. Find the normality of solution

Answer 1

Normality = molarity * basicity

Molarity = (4*1000) / (40*250) = 2/5

Basicity for NaOH is 1

So, Normality = 2/5 = 0.4N

Alternate method
Normality = equivalent of solute / volume of solution in litre
equivalent of solute = 4/40 =0.1

Normality = 0.1/0.25 = 0.4N