Sulphur content (%) in potassium sulphate is

✏️To calculate the percentage of sulfur, we need the molar masses:
-K (Potassium) = 39.1 g/mol
-S (Sulfur) = 32.1 g/mol
-O (Oxygen) = 16 g/mol
-Molar mass of K₂SO₄ = (2 x 39.1) + 32.1 + (4 x 16) = 174.3 g/mol
-Percentage of Sulfur = (Molar mass of Sulfur / Molar mass of K₂SO₄) x 100
-Percentage of Sulfur = (32.1 / 174.3) x 100 ≈ 18.4% which is closest to option C (17%).