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When 0.532g of benzene (C(6)H(6)), boili...

When 0.532g of benzene `(C_(6)H_(6))`, boiling point 353 K, is burnt with excess of oxygen in a constant volume system 22.3 kJ of heat is given out. Calculate `DeltaH` for the combustion process `(R=8.31 JK^(-1) mol^(-1))`.

Text Solution

Verified by Experts

The correct Answer is:
`-3274.2 kJ mol^(-1)`
`0.532gC_(6)H_(6)=0.532//78`mole `=0.00682` mole`:.Delta U = - (22.3)/(0.00682)kJ mol^(-1) = - 3269.8 kJmol^(-1)`
Calculate `DeltaH` as in Solved Problem above.
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