00:01
So in the case of the change in entropy of the surroundings and whether or not, i don't know, and in what type of reactions it would be thermodynamics favorable or unfavorable, whether that would be an exothermic or endothermic reactions, you should first consider the equation of delta s surroundings in relation to the change in entropy and temperature.
00:25
So as you can see here, a, um, the change.
00:30
Change in entropy of the surroundings is equal to negative change in enthalpy over teat for temperature.
00:40
And so it's important to remember that in an exothermic reaction, the change in enthalpy is negative, so it's less than zero, and in an endothermic reaction, the change in enthalpy is positive, so it's greater than zero.
01:01
So for an exothermic reaction, we see that this sign would be negative.
01:07
So if you're to plug a delta hm with a negative sign over here, these two negatives cancel out, and delta s surrounding as a whole would be positive, which would be thermodynamics favorable once we look at this equation right here, where the change in entropy of the universe is equal to the change in entropy of the system plus the change in entropy of the surroundings.
01:28
And so a positive change in entropy of the surroundings, would increase the change in entropy of the universe...
