Question Detail
Question
How many moles of sulfate ions (SO₄²⁻) are present in 1.50 mol of Al₂(SO₄)₃?
Correct Answer
Option C is the correct answer.
Detailed Explanation
Each formula unit of Al₂(SO₄)₃ contains 3 SO₄²⁻ ions. Moles SO₄²⁻ = 1.50 mol compound × 3 = 4.50 mol.
Hint
Multiply the moles of the compound by the number of sulfate ions per formula unit.