R3.1 Proton transfer reactions Quiz
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5 questions, one answer each
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1. In HCO₃⁻ + H₂O ⇌ H₂CO₃ + OH⁻, which species is the Brønsted–Lowry acid?
- A. HCO₃⁻
- B. H₂O
- C. OH⁻
- D. H₂CO₃ only
2. What is the pH of 0.0010 mol dm⁻³ nitric acid?
- A. 1.0
- B. 2.0
- C. 3.0
- D. 11.0
3. A solution at 298 K has [OH⁻] = 1.0 × 10⁻⁵ mol dm⁻³. What is [H⁺]?
- A. 1.0 × 10⁻⁵
- B. 1.0 × 10⁻⁹
- C. 1.0 × 10⁻¹⁴
- D. 1.0 × 10⁻¹⁹
4. Which is the correct equation for magnesium oxide reacting with nitric acid?
- A. MgO + HNO₃ → MgNO₃ + H₂O
- B. MgO + 2HNO₃ → Mg(NO₃)₂ + H₂O
- C. MgO + 2HNO₃ → Mg(NO₃)₂ + H₂
- D. Mg + 2HNO₃ → Mg(NO₃)₂ + H₂O
5. Which property is the same for 0.1 mol dm⁻³ HCl and 0.1 mol dm⁻³ CH₃COOH of equal volume?
- A. pH
- B. Electrical conductivity
- C. Rate of reaction with magnesium
- D. Volume of NaOH needed for neutralisation