Question:
A concentrated solution of copper sulphate, which is dark blue in colour, is mixed at room temperature with a dilute solution of copper sulphate, which is light blue. For this process:
- Entropy change is positive, but enthalpy change is negative.
- Entropy change and enthalpy changes are both positive.
- Entropy change is positive and enthalpy does not change.
- Entropy change is negative and enthalpy change is positive.
The final conc. of the mixture would be less than the initial concentration of the concentration $\ce{CuSO4}$ given.
Therefore I think the entropy change is positive. But, what about enthalpy? What factors should I look into to find answer to these types of questions?