pH and the ionic product of water Quiz
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5 questions, one answer each
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1. What is the pH of 0.0100 mol dm⁻³ hydrochloric acid?
- A. 1.00
- B. 1.30
- C. 2.00
- D. 12.00
2. A solution has pH 3.00. What is [H⁺]?
- A. 1.00 × 10⁻³ mol dm⁻³
- B. 3.00 mol dm⁻³
- C. 1.00 × 10⁻¹¹ mol dm⁻³
- D. 0.477 mol dm⁻³
3. Which expression gives Kw?
- A. [H⁺] / [OH⁻]
- B. [H⁺][OH⁻]
- C. [H⁺][OH⁻] / [H₂O]
- D. [H₂O] / [H⁺][OH⁻]
4. What is the pH of 0.00500 mol dm⁻³ NaOH at 298 K?
- A. 2.30
- B. 11.30
- C. 12.30
- D. 11.70
5. What happens to pure water when its temperature is raised?
- A. It becomes acidic
- B. It becomes alkaline
- C. Kw increases and it stays neutral
- D. Kw decreases and the pH rises above 7