Q. The volume of 0.1 M NaOH required to neutralize completely 20 mL of 0.1 M H₂SO₄ is:
0.1 M H₂SO₄ के 20 mL को पूर्णतः उदासीन करने के लिए आवश्यक 0.1 M NaOH की मात्रा है:
Explanation
Given:
20 mL of 0.1 M H₂SO₄
0.1 M NaOH (volume to find)Neutralization reaction: H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O
Step 1: Calculate moles of H₂SO₄
- Moles of H₂SO₄ = 0.1 M × 0.020 L = 0.002 mol
Step 2: Apply stoichiometry
- From balanced equation: 1 mol H₂SO₄ neutralizes 2 mol NaOH
- Moles of NaOH needed = 0.002 × 2 = 0.004 mol
Step 3: Calculate volume of NaOH
- Volume = moles ÷ molarity = 0.004 mol ÷ 0.1 M = 0.04 L = 40 mL
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