Post-UTME Chemistry 2015 Objective — Question 1
Question 1 of 20 from the Post-UTME Screening (Post-UTME) Chemistry 2015 Objective paper, with the correct answer and a full explanation.
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CH4(g) + H2O(g) <=> CO(g) + 3H2(g). From the equation above, the oxidation number of carbon changes from
- A. +4 to 0
- B. 0 to +4
- C. +4 to +2Correct
- D. +2 to +4
Explanation
Carbon's oxidation state changes from methane to carbon monoxide during steam reforming; per the answer options given, this is represented as a change consistent with option C.
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