Use oxidation numbers to identify reaction is REDOX reactions.

a. 2SO2(g) + O2(g) -> 2SO2(g)

for 2SO2 I got: -2 for S, -2 for O

for O2 I got 0

for 2SO2 I got -2 for S again, and -2 again for 0

Therefore I lost one oxygen and a REDOX reaction occured

Am I right?????

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