Neutralisation and making salts Quiz
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5 questions, one answer each
Each answer is checked as you go, with why.
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1. Which salt is made when zinc reacts with sulfuric acid?
- A. Zinc chloride
- B. Zinc nitrate
- C. Zinc sulfate
- D. Zinc carbonate
2. Which products form when hydrochloric acid reacts with calcium carbonate?
- A. Calcium chloride and hydrogen
- B. Calcium chloride, water and carbon dioxide
- C. Calcium hydroxide and water
- D. Calcium chloride and water only
3. Why is excess copper(II) oxide added to warm sulfuric acid?
- A. To speed up crystallisation
- B. To make the acid stronger
- C. To make sure all the acid has reacted
- D. To make the oxide soluble
4. A student needs pure crystals of sodium chloride from sodium hydroxide solution and hydrochloric acid. Why is a titration used?
- A. Both reactants are soluble, so there is no excess solid to filter off
- B. Sodium chloride is insoluble
- C. The reaction makes hydrogen
- D. Titration removes the water
5. Titres of 20.4, 20.0, 20.1 and 20.2 cm³ are recorded. Concordant results are within 0.2 cm³. What is the mean titre of the concordant results?
- A. 20.1 cm³
- B. 20.2 cm³
- C. 20.0 cm³
- D. 20.18 cm³