C1.5 Water and Hydrogen

1. During the production of hydrogen gas by adding Zinc granules to hydrochloric acid, why is the wet hydrogen gas passed through anhydrous calcium chloride?

2. How does water react with metals?

3. Hydrogen gas is less dense than air hence it can be collected by upward delivery or downward displacement of air

4. What happens when Hydrogen burns in air?

5. How does a metal react with steam?

6. Mention the properties of Hydrogen gas

7. What products are formed when a candle burns in air?

8. Mention the uses of hydrogen

9. What is observed when water is passed through white anhydrous copper (II) sulphate?

10. Which of the following statement about Hydrogen is CORRECT?

11. Why can’t Magnesium be used for the Lab preparation of hydrogen gas in reaction with dilute acids?

12. Which metal reacts explosively when placed in water and forms a silvery ball that moves rapidly and a purple flame?

13. Why is Aluminum not used for Lab preparation of hydrogen gas in the preparation of hydrogen gas in reaction with dilute acids?

14. Why are Potassium, Sodium, Lithium, and Calcium not used for Lab preparation of hydrogen gas in reaction with dilute acids?

15. What happens when hydrogen gas is passed over heated copper (II) oxide and heated Lead (II) oxide and heated Iron (II) oxide?

16. When organic matter such as hydrocarbons burns in air carbon (IV) oxide and water are produced True or False