Question

The set up below was used to prepare dry hydrogen gas. Study it and answer the questions that follow.

1. Identify one mistake in the set-up above
2. What is the role of Liquid Z?
3. Using an equation give one chemical property of hydrogen gas

Answer 1

1.  The method of gas collection   
2. Absorbs moisture/water from hydrogen gas
3.    
   • Burns in oxygen to form water
   • 2H_2 (g) + O_2 (g) → 2 H₂O_(l)
   • Removes oxygen from metals lower in the reactivity series
   • H_2 (g) + CuO_(s)  →Cu _(s) + H₂O _(l)