To the ammonium chloride solution was added 125 ml of an 18% sodium hydroxide solution with a density of 1.2

To the ammonium chloride solution was added 125 ml of an 18% sodium hydroxide solution with a density of 1.2 g / cm3 and the solution was heated. Calculate the amount of ammonia.

Let’s calculate the chemical amount of sodium hydroxide. For this purpose, we divide its weight by its molar mass.

M NaOH = 23 + 16 + 1 = 40 grams / mol;

N NaOH = 125 x 0.18 x 1.2 / 40 = 0.675 mol;

The reaction can produce the same amount of ammonia.

Let’s find its volume. To do this, multiply the amount of substance by the volume of one mole of gas, which is 22.4 liters.

V NH3 = 0.675 x 22.4 = 15.12 liters;