1.
The dissolution of CaCl26H2O\text{CaCl}_2 \cdot 6\text{H}_2\text{O} in a large volume of water is endothermic to the extent of 3.5kcal/mol3.5\,\text{kcal/mol}. For the reaction CaCl2(s)+6H2O(l)CaCl26H2O(s)\text{CaCl}_2(\text{s}) + 6\text{H}_2\text{O}(\text{l}) \rightarrow \text{CaCl}_2 \cdot 6\text{H}_2\text{O}(\text{s}), ΔH\Delta H is 23.2kcal-23.2\,\text{kcal}. The heat of solution of anhydrous CaCl2\text{CaCl}_2 in a large quantity of water will be