Question

19. For the process
AH for (A → X) = 50 kJ
AH for (Y → X) = 20 kJ
AH for (B + Y) = 30 kJ
Then AH for A → B will be
(1) 100 kJ
(2) -100 kJ
(3) Zero ku
(4) -50 kJ​

Answer 1

answer must be zero kj.option 3