Question
Question: The solubility (S) of a solute in water varies with temperature as follows. S = A \(\mathrm { e } ^...
The solubility (S) of a solute in water varies with temperature as follows. S = A e−ΔH/RT .
For which of the following solute ln S vs 1/T plot is
When DH represent enthalpy of solution ?
A
CaO
B
CuSO4
C
MgSO4
D
CuSO4, 5H2O
Answer
CuSO4, 5H2O
Explanation
Solution
Since slope of the plot is negative, hence the enthalpy of dissolution is positive. For the hydrated salt usually the enthalpy of dissolution is positive