Calculate the amount of substance and the mass of magnesium oxide (MgO) required to neutralize 0.2 mol

Calculate the amount of substance and the mass of magnesium oxide (MgO) required to neutralize 0.2 mol of hydrochloric acid (HCl). What is the mass of hydrochloric acid (HCl) that reacts?

The reaction of magnesium oxide with hydrochloric acid is described by the following chemical reaction equation:

MgO + 2HCl = MgCl2 + H2O;

One mole of magnesium oxide reacts with two moles of hydrochloric acid.

N MgO = N HCl / 2 = 0.2 / 2 = 0.1 mol;

M MgO = 24 + 16 = 40 grams / mol;

m MgO = 0.1 x 40 = 4 grams;

Let’s find the mass of hydrochloric acid.

M HCl = 1 + 35.5 = 36.5 grams / mol;

m HCl = 0.2 x 36.5 = 7.3 grams;