723 KJ mol""^(-1) heat is released when 1 molemethanol combustions in present of O_(2). What amount of heat is enlisted of one mole of O_(2) is used?

723 KJ mol""^(-1) heat is released when 1 molemethanol combustions in

1.	723 KJ mol""^(-1) heat is released when 1 molemethanol combustions in present of O_(2). What amount of heat is enlisted of one mole of O_(2) is used?
Answer» 241 kJ 723 kJ 482 kJ 924 KJ Solution :Combusion reaction of methanol, `CH_(3) OH_((l)) + (3)/(2) O_(2(g)) = CO_(2(g)) + 2H_(2) O_((l)) , DELTA H= -723` kJ 1 mole `(3)/(2)` mole therefore `(3)/(2)` moles `O_2` is used in this reaction. If 1 mole `O_2` is used. then free ENERGY `= (2)/(3) xx` combustion energy 723 `= 482` kJ