When -0.532 g of benzene ( C_(6)H_(6)) , boilingpoint 353 K, is burnt with excess of oxygen in a constant volume system, 22.3kJ of heat is given out. Calculate DeltaH for the combustion process ( R = 8.13 J K^(-1) mol^(-1))

When -0.532 g of benzene ( C_(6)H_(6)) , boilingpoint 353 K, is burnt

1.	When -0.532 g of benzene ( C_(6)H_(6)) , boilingpoint 353 K, is burnt with excess of oxygen in a constant volume system, 22.3kJ of heat is given out. Calculate DeltaH for the combustion process ( R = 8.13 J K^(-1) mol^(-1))
Answer» SOLUTION :`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.