Water in 50 liter rigid container is initially at 500 kPa and 350C. As the result of heat transfer the water obtains thermal equilibrium with the surrounding, which are at a temperature of 30C.
a) What is the change in entropy of the water going from state 1 to state 2?
b) If the surroundings are treated as a thermal reservoir, what is the total change in entropy of the universe due to this cooling process?