JAMB Chemistry 2013 Objective — Question 22

Question 22 of 50 from the Joint Admissions and Matriculation Board (JAMB) Chemistry 2013 Objective paper, with the correct answer and a full explanation.

2H2O(l) + 2F2(g) ⇌ 4HF(aq) + O2(g). In the reaction above, the substance that undergoes reduction here is

A. fluorineCorrect
B. oxygen
C. hydrogen
D. water

Explanation

The substance that undergoes reduction is fluorine. Its oxidation number decreases from 0 in F2 to -1 in HF.

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