WAEC Chemistry 2015 Theory — Question 38

Question 38 of 49 from the West African Examinations Council (WAEC) Chemistry 2015 Theory paper, with the correct answer and a full explanation.

4(c)(iv). Write a balanced equation for the production of each gaseous fuel.

Model answer

For water gas: C(s) + H₂O(g) → CO(g) + H₂(g). For producer gas: 2C(s) + O₂(g) + 4N₂(g) → 2CO(g) + 4N₂(g) (i.e. air is passed over hot coke, giving a mixture of CO and unreacted N₂).

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