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CH2S g O2 g 2Cn SO2 g What is the change in the... - JAMB Chemistry 2017 Question

CH2S(g) + O2(g) → 2Cn + SO2(g)
What is the change in the oxidation number of copper in the reaction?
A
0 to + 2
B
0 to + 1
C
C + 1 to 0
D
+ 2 to + 1
correct option: c
In the reactant;

Cu2S

2 Cu - 2(1) = 0

2 Cu = 2

Cu = \(\frac{2}{2}\)

Cu = +1

In the product, Cu

Cu = O

The oxidation number of Cu in Cu2S and Cu respectively is +1 and 0 respectively
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