Question

When ethen is burnt in excess of o2 ,the oxidation number of carbon change?

Answer 1

when ethane burn in excess of O2 then it produce heat and Co2.
therefore the oxidation number of carbon in ethane is.
c2h6=2x+6=0
2x=-6
x=-3.
and the oxidation number of carbon in CO2 is.
2x-4=0
2x=4
x=2.
hence when ethane burn in excess of oxygen then it's oxidation number change from -3 to 2.
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this question was good.... and tricky...
myself chirag Verma from 10th standard from uttar Pradesh.



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thank you so much.....

Answer 2

The oxidation state of carbon changes from -3 to +2