WAEC Chemistry 2013 Objective — Question 19
Question 19 of 50 from the West African Examinations Council (WAEC) Chemistry 2013 Objective paper, with the correct answer and a full explanation.
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Consider the reaction represented by the following equation: C2H2 + yH2 → C2H6. The value of y in the reaction is
- A. 4
- B. 3
- C. 2Correct
- D. 1
Explanation
The equation for total hydrogenation of ethyne goes as: C2H2 + 2H2 → C2H6. Comparing this to C2H2 + yH2 → C2H6, y=2.
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