In a constant-pressure calorimetry experiment, Jiwon and Jisun dissolved 10.0 g of CaCl2 (MM = 110.98 g mol-1) in 250.0 g of water initially at 20.00°C. As the solid dissolves in water, the temperature rises to 26.73°C. Calculate the enthalpy of dissolution (ΔHdissolution) of CaCl2 in kJ mol-1. Assume that the calorimeter absorbed a negligible amount of heat.

In a constant-pressure calorimetry experiment, Jiwon and Jisun dissolved 10.0 g of CaCl2 (MM = 110.98 g mol-1) in 250.0 g of water initially at 20.00°C. As the solid dissolves in water, the temperature rises to 26.73°C. Calculate the enthalpy of dissolution (ΔHdissolution) of CaCl2 in kJ mol-1. Assume that the calorimeter absorbed a negligible amount of heat.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter6: Thermochemistry

Section: Chapter Questions

Problem 68E: In a coffee-cup calorimeter, 1.60 g NH4NO3 is mixed with 75.0 g water at an initial temperature of...

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