The Student Room Group

chem a level

In which reaction does a single nitrogen atom have the greatest change in oxidation number?

A 4NH3 + 5O2 4NO + 6H2O
B 3NO2 + H2O 2HNO3 + NO
C 2NO + O2 2NO2
D 4NH3 + 6NO 5N2 + 6H2O

Can someone explain as to how the answer is a? i think its d
Reply 1
What's the oxidation state of nitrogen in each of the species?
Reply 2
Original post by Aliff
x

thank u so much!!!!!!!
Original post by ranataw
thank u so much!!!!!!!

I'd advice you to study redox chemistry and oxidation numbers again because it's a topic that will be continually assessed at AS and A level. It is an important topic so learn the rules. :smile:
Reply 4
so the answer is B?

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