(b) In a particular spontaneous process the entropy of the system decreases. What can you conclude about the sign and magnitude of ΔS_surr?

Video transcript

Hello. In this problem we are told for non spontaneous process, the change in entropy of the system is negative whereas to identify the sign for the change in entropy of the universe. So the change in HP of the universe is equal to the change in entropy of the system. Plus the change in entropy of the surroundings. If we have a non spontaneous process and the change in entropy of the universe will be negative. We have a spontaneous process. The change in entropy of the universe will be positive. And if we have a reversible process the change in entropy of the universe will be equal to zero. So given that we have a non spontaneous process, that means then the sign for the change in entropy of the universe is going to be negative. And this corresponds to answer C. Thanks for watching. Hope. This helps