Chemistry · May / June 2025 · Paper 12 · Question 21
5070The characteristic properties of acids and bases
Which row shows the equations for the dissociation of methanoic acid and of nitric acid?
- Amethanoic acid: HCOOH(aq) → H⁺(aq) + HCOO⁻(aq); nitric acid: HNO₃(aq) → H⁺(aq) + NO₃⁻(aq)
- Bmethanoic acid: HCOOH(aq) → H⁺(aq) + HCOO⁻(aq); nitric acid: HNO₃(aq) ⇌ H⁺(aq) + NO₃⁻(aq)
- Cmethanoic acid: HCOOH(aq) ⇌ H⁺(aq) + HCOO⁻(aq); nitric acid: HNO₃(aq) ⇌ H⁺(aq) + NO₃⁻(aq)
- Dmethanoic acid: HCOOH(aq) ⇌ H⁺(aq) + HCOO⁻(aq); nitric acid: HNO₃(aq) → H⁺(aq) + NO₃⁻(aq)
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Correct answer: D. methanoic acid: HCOOH(aq) ⇌ H⁺(aq) + HCOO⁻(aq); nitric acid: HNO₃(aq) → H⁺(aq) + NO₃⁻(aq)
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