When ammonium nitrate (NH4NO3) dissolves in water, the solution gets cold.
NH4NO3 (s) --> NH4+ (aq) + NO3- (aq)
Which of the following is true about this system?
a. The sign on the enthalpy change is +; the sign on the entropy change is +
b. The sign on the enthalpy change is -; the sign on the entropy change is –
c. The sign on the enthalpy change is +; the sign on the entropy change is –
d. The sign on the enthalpy change is -; the sign on the entropy change is +
e. There is no change of enthalpy, the but the sign on the entropy change is +