00:01
Hello students, so for this video we'll be learning about delta h and its relation to endothermic and exothermic reaction.
00:07
Firstly, we need to know something so delta h for breaking of attractions that is the reactants is equals to the delta h of reactants or we can say it as delta h r and delta h for forming of attractions is equals to delta h of products or we can say it as delta h p.
00:41
Now if delta h is equals to for the reaction is equals to delta h r minus delta h p and if delta h is positive then the reaction is endothermic, if delta h is negative then the reaction is exothermic.
01:04
So, we can say that if delta h r is greater than delta h p then delta h is positive and if delta h r is less than delta h p then the delta h is negative.
01:23
Now let's take some scenarios.
01:25
So, the first one is solid with delta h for breaking of attraction are three times the magnitude compared to forming of attractions that means that the delta h r that is breaking of attraction is three times so it is greater than the delta h p.
02:07
So, if delta h r is greater than delta h p then we can say that delta h is positive and this falls under the endothermic reaction.
02:20
Let's move on to next one...