Question

Calculate the volume of water to be added to 400 ml of semi normal hcl solution to make it decinormal

Answer 1

M1 = 1/2 mol/L

V1 = 400ml

M2 = 1/10 mol/L

V2 = ?

Moles of HCl will remain same in both cases,

M1 X V1 = M2 X V2

1/2 x 400 = 1/10 x V2

V2 = 2000ml = 20L