S + O₂ → SO₂ + 70.8 kcal
Based on the reaction shown,which statement is true?

Question

S + O₂ → SO₂ + 70.8 kcal Based on the reaction shown,which statement is true?

Quizplus · Accepted Answer

The given reaction equation shows that 1 mole of sulfur (S) reacts to form 1 mole of sulfur dioxide (SO2) and releases 70.8 kcal of energy. The molar mass of sulfur is 32.1 g/mol. Therefore, 32.1 g of sulfur will react to form 64.2 g of sulfur dioxide (1 mole of sulfur dioxide has a molar mass of 64.2 g/mol). Since the given value of energy release is for 1 mole of sulfur, it applies to 32.1 g of sulfur as well. Hence, option C is correct.

S + O2 → SO2 + 70.8 Kcal

S + O₂ → SO₂ + 70.8 Kcal