Question

The method for preparation of water gas is:

• A. Burning coke in excess of air
• B. Oxidation of C in limited supply of oxygen
• C. Passing steam over hot coke
• D. Passing air over hot coke

Hint:

Water gas is typically produced by the reaction of steam with hot coke. Remember, the other methods listed are not used for water gas production.

Answer 1

The Correct Option is C

Water gas is a mixture of carbon monoxide (CO) and hydrogen (H$_2$) produced by passing steam over hot coke (carbon). The reaction is as follows: \[ C(s) + H_2O(g) \rightarrow CO(g) + H_2(g) \] - In this process, steam reacts with hot coke to produce carbon monoxide and hydrogen.
- This method is commonly used in the industrial production of water gas.
Thus, the correct method for the preparation of water gas is passing steam over hot coke.