(Solved): A sample of solid benzoic acid (C_(6)H_(5)(C)/(O)O H) that weighs 0.800 g is burned in an excess of ...

A sample of solid benzoic acid

that weighs 0.800 g is burned in an excess of oxygen to

and

in a constant-volume calorimeter at

. The temperature increase is observed to be

. The heat capacity of the calorimeter and its contents is known to be

. (a) Write and balance the equation for the combustion of benzoic acid. (b) Calculate the standard change in internal energy

for the combustion of 1.000 mol benzoic acid to

and

at

. (c) Calculate the standard enthalpy change

for the same reaction as in part (b). (d) Calculate the standard enthalpy of formation per mole of benzoic acid, using data for the standard enthalpies of formation of

and

from Appendix D.