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July 6, 2015

Homework Help: Chemistry

Posted by Dexter on Thursday, June 16, 2011 at 10:00pm.

Please help me verify:

The following reactions are involved in the formation of acid rain. Use oxidation numbers to identify which of these reactions are REDOX reactions.

a. 2SO2(g) + O2(g) �� 2SO2(g)
-2 -2 0 -2 -2
No change - not REDOX reacton

b. 3NO2(g) + H2O(l) �� 2HNO3(aq) + NO(g)
-3 -2 +1 -2 +1-3-2 -3-2
Nitrogen and Oxygen are reduced
REDOX reaction has occured

c. SO2(g) + H2O(l) �� H2SO3(aq)
-2-2 +1-2 +1-2-2
Oxygen is reduced
REDOX reaction has occured


Please check...

ps. why would they make a rule for hydrogen in most compounds being +1 when is it not? Same with oxygen being -2.

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