Bronsted-Lowry acids and bases and pH Quiz
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5 questions, one answer each
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1. In HCl + NH₃ → NH₄⁺ + Cl⁻, which species is the Brønsted–Lowry acid?
- A. HCl
- B. NH₃
- C. NH₄⁺
- D. Cl⁻
2. What is the conjugate base of H₂SO₄?
- A. SO₄²⁻
- B. H₃SO₄⁺
- C. H₂O
- D. HSO₄⁻
3. What is the pH of 0.0020 mol dm⁻³ hydrochloric acid?
- A. 2.70
- B. 3.00
- C. 2.00
- D. 11.30
4. What is [H⁺] in a solution of pH 5.00?
- A. 5.0 × 10⁻¹ mol dm⁻³
- B. 5.0 × 10⁻⁵ mol dm⁻³
- C. 1.0 × 10⁻⁵ mol dm⁻³
- D. 1.0 × 10⁵ mol dm⁻³
5. A weak acid is diluted 10 times. What happens to its pH?
- A. It rises by exactly 1
- B. It rises by less than 1
- C. It falls by 1
- D. It does not change