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n Al
= m/Mr
= 5,4/27
= 0,2 mol
Gunakan perbandingan koefisien utk perbandingan mol
n H₂SO₄ = 3/2 × n Al
n H₂SO₄ = 3/2 × 0,2 mol
n H₂SO₄ = 0,3 mol
M H₂SO₄ = n/V
2 = 0,3/V
V = 0,3/2
V = 0,15 L = 150 mL