Predict the change in entropy of the following reaction. NH2 I H2 (A) Decreases (B) Increases (C) Does not change (D) Decreases with increase in temperature Calculate the work done in a reversible expansion of three moles of an ideal gas from pressure of 4 bar to 1 bar at 298K. (A)-10304 J (B) +10304 J (C)- 3435 J (D)-107.7 J