When sulfur is burned in oxygen, 11.2 liters of sulfur dioxide are formed. Determine the mass of burnt sulfur.

univerkov | June 24, 2021 | education

Let’s find the amount of substance SO2.

n = V: Vn.

n = 11.2 L: 22.4 L / mol = 0.5 mol.

S + O2 = SO2.

According to the reaction equation, 1 mol of SO2 accounts for 1 mol of S. The substances are in quantitative ratios of 1: 1. The amount of substance SO2 and S are the same.

n (S) = n (SO2) = 0.5 mol.

Find the mass S.

M (S) = 32 g / mol.

m = n × M.

m = 32 g / mol × 0.5 mol = 16 g.

Answer: 16 g.

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