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5.2 Exercise 12

Avg difficulty 2.5

Dissolving 3.0 g of CaCl2(s) in 150.0 g of water in a calorimeter (the figure) at 22.4 °C causes the temperature to rise to 25.8 °C. What is the approximate amount of heat involved in the dissolution, assuming the specific heat of the resulting solution is 4.18 J/g °C? Is the reaction exothermic or endothermic?

OpenStax Chemistry 2e, 5.2 Calorimetry, exercise 12

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Adapted from General Chemistry © 2019 Rice University. Licensed under CC BY 4.0. Sources: Chemistry 2e, Chemistry: Atoms First 2e. Imported at revision 32c7196.