Answer :
A. Breaking the H–H bond in H2 gas releases heat.
B. Breaking the O–O bond in O2 gas releases heat.
C. Forming the H–O bonds in H2O releases heat.
D. Both A and B are responsible for heat being released in the reaction.
B. Breaking the O–O bond in O2 gas releases heat.
C. Forming the H–O bonds in H2O releases heat.
D. Both A and B are responsible for heat being released in the reaction.