Question

1. A list of compounds are given below: H₂O, HCl, CH₄ Construct chemical reactions to show the preparation of H₂ from each of the above compounds. 

2. What is syn gas? How is it prepared? 

3. What is coal gasification? 

4. Explain water gas shift reaction.

Answer 1

1.

2. Syn gas is a mixture of CO and H₂ . It is prepared by passing steam over red hot coke.

3. The process of production of syngas from coal is called coal gasification. 

4. The production of dihydrogen can be increased by reacting CO of syngas mixtures with steam in the presence of iron chromate as catalyst. This is called water gas shift reaction.

The CO₂ is removed by scrubbing with sodium arsenite solution.