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Grade 11Physical Chemistry

How many litres of C2H6(g)at 25 deg celsius and725 mmHg are needed to evolve 2.732 * 1012 J of energy when C2H6 is burnt in O2?

Profile image of Abhinav Acharya
12 Years agoGrade 11
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1 Answer

Profile image of Sumit Majumdar
12 Years ago
Dear student,
The reaction goes as follows:
2C_{2}H_{6}+7O_{2}\rightarrow 4CO_{2}+6H_{2}O
Now, once we know how much is the heat of formation of of carbon di oxide, based on that we can find the number of moles that are produced which would in turn give the required volume.
Regards
Sumit

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