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 of these can react with an acid to make a soluble salt?
- A. An insoluble base
- B. Water
- C. Carbon dioxide gas
- D. Universal indicator
2. Why is excess insoluble base added when making a salt from acid + insoluble base?
- A. To speed up the reaction
- B. To ensure all the acid reacts
- C. To change the colour of the product
- D. To increase the pH above 14
3. How is unreacted excess base removed from the reaction mixture?
- A. Distillation
- B. Filtration
- C. Chromatography
- D. Titration
4. What is used to identify the exact neutralisation point when making a salt from acid + alkali?
- A. A thermometer
- B. A burette alone
- C. An indicator
- D. A filter paper
5. Why is the acid-alkali reaction repeated without indicator once the volumes are known?
- A. To save acid
- B. To avoid contaminating the salt with indicator dye
- C. Because indicators react with alkalis
- D. To increase the yield