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Larutan H₂SO₄ 3 M
Volume = 200 ml = 200/1000 L = 0,2 L
Mr H₂SO₄ = 98
Ditanyakan :
Volume H₂SO₄ 98% dengan ρ = 1,8 kg/L ?
Jawaban :
mol H₂SO₄ = V x M = 0,2 L x 3 M = 0,6 mol
massa H₂SO₄ = mol x Mr = 0,6 mol x 98 gr/mol = 58,8 gr
ρ = 1,8 kg/L = 1,8 x 1000 gr/L = 1800 gr/L
ρ = m/v
v = m/ρ = 58,8 gr / 1800 gr/L = 0,0327 L = 32,7 mL