Answer to Question #43441 in Physical Chemistry for ashley

Question

What volume of 0.1 M NaOH is needed to titrate 100 mL of 0.2 M H2SO4?

a) 50 mL

b) 100 mL

c) 200 mL

d) 400 mL

Answer 1

2NaOH + H₂SO₄ --> Na₂SO₄ + 2H₂O
n(NaOH) = 2n(H₂SO₄), => c(NaOH)V(NaOH) = 2c(H₂SO₄)V(H₂SO₄)
V(NaOH) = 2c(H₂SO₄)V(H₂SO₄)/c(NaOH) = (2 * 0.2 M * 100 mL) / 0.1 M = 400 mL
So, the correct option is (d): 400 mL