Dissolution gas, exo/endo Thermic

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The discussion centers around the interpretation of a statement regarding the solubility of carbon dioxide in water and its relation to temperature changes. It highlights that as temperature increases, the solubility of carbon dioxide decreases, leading to the conclusion that the dissolution process is exothermic. This conclusion is supported by Le Chatelier's principle, which explains how changes in temperature affect equilibrium in chemical processes. The initial confusion is resolved by recognizing the application of this principle, clarifying the reasoning behind the conclusion about the exothermic nature of carbon dioxide solubility in water.
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One of the answer explanations in practice book states "student 2 says that the solubility of carbon dioxide in water decreases as the temperature increases. It would be best concluded from this statement that the process of dissolving carbon dioxide in water is exothermic."

Can someone please explain to me how they can make this conclusions based on the statement?
 
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Oh duh! Don't know what I was thinking. Thank you
 
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