Question

"if 34.1 kj of heat is released when 5 moles of a gaseous substance condenses, what is the heat of condensation?"

Answer 1

Heat of condensation is the amount of energy released due to condensation of 1 mole of Gaseous substance . It is always negative .

Here according to question,
34.1 kJ of heat is released when 5 moles of a Gaseous substance condenses .so, energy released per mole = 34.1 kJ/5mol = 6.82kJ/mole

Hence, heat of condensation of substance is -6.82 kJ/mol