Concept:For an exothermic dissolution, solubility decreases as temperature increases.Explanation:The dissolution can be written as: salt+water⇌solution+heat.Increasing temperature adds heat to the system.By Le Chatelier's principle, the equilibrium shifts to the left.As a result, less salt dissolves at higher temperatures.The correct graph shows a downward trend of solubility with rising temperature.Answer:II (Option B)
