Water decomposes by absorbing 286.2 kJ of electrical energy per mole. When H_(2) and O_(2) combine to form one mole of H_(2)O, 286.2kJ of heat is produced. Which law is proved ? What statement of the law followsfrom it?

Water decomposes by absorbing 286.2 kJ of electrical energy per mole.

1.	Water decomposes by absorbing 286.2 kJ of electrical energy per mole. When H_(2) and O_(2) combine to form one mole of H_(2)O, 286.2kJ of heat is produced. Which law is proved ? What statement of the law followsfrom it?
Answer» Solution :Law of conservation of energy ( or 1st law of thermodynamics) Def.Energy can neither be created or destroyed , ALTHOUGH it may be convertedfrom ONE formto another.