Question

1.Calculate the molar concentration of 20.0 mL of the sulphuric acid when 1.00 mol/L sodium hydroxide is used as the titrant.
2.Write the total ionic and net ionic equations for this reaction.

Answer 1

Question #78011, Chemistry, Other

1. Calculate the molar concentration of 20.0 mL of the sulphuric acid when 10 ml of 1.00 mol/L sodium hydroxide is used as the titrant.

2. Write the total ionic and net ionic equations for this reaction.

Answer:

1. H₂SO₄ + 2NaOH = Na₂SO₄ + 2H₂O

2 H⁺ + SO₄ᵗʲ + 2 Na⁺ + 2 OHᵗʲ = 2 Na⁺ + SO₄ᵗʲ + 2H₂O

2 H⁺ + 2 OHᵗʲ = 2H₂O

Cₘ = n/V

n (NaOH) = 2 × n (H₂SO₄)

Cₘ (H₂SO₄) × 20 = 2 × 1 × 10

Cₘ (H₂SO₄) = 1 mol/L