00:01
Hello everyone, in the following question we have to determine that whether the following reactions are exothermic or endothermic.
00:06
So, the first one that is given is melting of ice.
00:12
So, the melting of ice requires the absorption of heat to break the bonds between the water molecules.
00:18
So, we can say that it is nothing but it is an endothermic reaction, endothermic reaction.
00:27
B, it is given as decomposition of the iodine crystals, decomposition of iodine crystals.
00:40
So, the decomposition of iodine crystal releases heat.
00:43
In endothermic reaction it was absorbs heat, right, absorbing heat and in the decomposition of iodine crystals it releases heat as the iodine molecules bond together.
00:57
So, we can say that it is nothing but it is an exothermic reaction, exothermic reaction.
01:03
Why this is an exothermic reaction? because releases heat or heat is being released.
01:13
The third that is given to us is evaporation of the alcohol, evaporation of alcohol.
01:25
So, the evaporation of alcohol requires the absorption of heat to break the bonds between the alcohol molecules...