What mass of sulfur will react with hydrogen if 96 g of H2S is obtained?

Let’s find the amount of substance H2S by the formula:

n = m: M.

M (H2S) = 34 g / mol.

n = 96 g: 34 g / mol = 2.82 mol.

Let’s compose the reaction equation, find the quantitative ratios of substances.

H2 + S = H2S

According to the reaction equation, there is 1 mol of S for 1 mol of H2S. Substances are in quantitative ratios of 1: 1.

n (S) = n (H2S) = 2.82 mol.

Let’s find the mass S by the formula:

m = n × M,

M (S) = 32 g / mol.

m = 2.82 mol × 32 g / mol = 90.24 g.

Answer: 90.24 g.