Chemical Reactions in Solution Quiz
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5 questions, one answer each
Each answer is checked as you go, with why.
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1. What is used to measure the temperature change in a solution reaction?
- A. A pH meter
- B. A thermometer
- C. A balance
- D. A gas syringe
2. Why is the reaction mixed in an insulated container?
- A. To speed up the reaction
- B. To reduce energy loss to the surroundings
- C. To increase the pressure
- D. To prevent a colour change
3. A student mixes hydrochloric acid and sodium hydroxide solution and the temperature rises from 20°C to 27°C. What type of reaction is this?
- A. Endothermic
- B. Reversible
- C. Exothermic
- D. Catalytic
4. Which of these is NOT a reaction typically studied using the insulated-container temperature method?
- A. A solid dissolving in water
- B. A neutralisation reaction
- C. The electrolysis of molten lead bromide
- D. A metal reacting with water
5. Two students carry out the same neutralisation reaction with identical volumes and concentrations; student A gets ΔT = 5°C and student B gets ΔT = 8°C. What is the most likely explanation?
- A. Student B's reaction was endothermic
- B. Student A did not stir the mixture, losing heat to the surroundings before recording the maximum temperature
- C. Student B used a smaller container
- D. The acid used by student A was diluted