The standard enthalpy change of solution for ammonium nitrate, NH4NO3 , is +25.7 kJ mol–1.
(a) Calculate the value for the standard entropy change in the surroundings, ∆Ssurroundings , when ammonium nitrate dissolves in water at 298 K.
Include a sign and units with your answer. [2 marks]
(b) Explain what can be deduced from your answer in (a) about the sign and the value of the standard entropy change in the system, ∆Ssystem , when NH4NO3 dissolves. [3 marks]
Can someone please help me with this question? Thanks in advance
For (a) I got -86.24 J mol^-1 K^-1 but I’m not sure