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An insulated calorimeter contains 100 g of water at 22 °C. A chemical reaction causes the temperature to increase by 6 °C. Is the heat of reaction for this process endothermic or exothermic? Group of answer choicesexothernmicendothermic

Question

An insulated calorimeter contains 100 g of water at 22 °C. A chemical reaction causes the temperature to increase by 6 °C. Is the heat of reaction for this process endothermic or exothermic? Group of answer choicesexothernmicendothermic

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Solution

The heat of reaction for this process is exothermic. This is because the temperature of the water in the calorimeter increased, which means heat was released by the reaction into the water. In an endothermic reaction, heat is absorbed from the surroundings, which would cause the temperature of the water to decrease, not increase. Therefore, the reaction is exothermic.

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