Calculate the mass of an alkali solution with a mass fraction of sodium hydroxide of 15%, which must be taken

Calculate the mass of an alkali solution with a mass fraction of sodium hydroxide of 15%, which must be taken for the reaction with aminoacetic acid with a chemical amount of 0.4 mol.

1. Let’s compose the equation of the proceeding reaction:

CH2 (NH2) COOH + NaOH → CH2 (NH2) COONa + H2O;

2.determine the chemical amount of sodium hydroxide:

n (NaOH) = n (CH2 (NH2) COOH) = 0.4 mol;

3.Calculate the mass of the reacted hydroxide:

m (NaOH) = n (NaOH) * M (NaOH);

M (NaOH) = 23 + 16 + 1 = 40 g / mol;

m (NaOH) = 0.4 * 40 = 16 g;

4.calculate the mass of the alkali solution:

m (NaOH solution) = m (NaOH): w (NaOH) = 16: 0.15 = 106.67 g.

Answer: 106.67 g.