Calculate the mass of ammonia that can be obtained from 168g of nitrogen

Ammonia is obtained by the interaction of nitrogen and hydrogen with heating and high pressure according to the following reaction (Haber process):

N2 + 3H2 = 2NH3

Let us calculate the number of moles of nitrogen, knowing its mass.

M (N2) = 14 * 2 = 28 g / mol.

n (N2) = m / M = 168/28 = 6 mol.

According to the reaction equation, from 1 mol of N2, 2 mol of NH3 is obtained. Accordingly, from 6 moles of nitrogen, 6 * 2 = 12 moles of ammonia will be obtained.

Let’s calculate the mass of the resulting ammonia by multiplying the amount of the substance by the molar mass of ammonia.

M (NH3) = 17 g / mol.

m (NH3) = n * M = 12 * 17 = 204 g.