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b. Calculate how much heat the water lost or gained.

b. Calculate how much heat the water lost or gained.

Chemistry
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
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Please show the calculation in B. Where the final answer is 2800.6 J

6. In a coffe-cup calorimeter, 100.0 of H;0 and 100.0 mL of HCl are mixed. The HCI had an initial temperature of 44.6°C and the water was originally at 24.6 °C. After the reaction, the temperature of both substances is 31.3°C. a. Was the reaction exothermic or endothermic? Explain. For the water- endothermic. The temperature increased from 24.6°C to 31.3°C indicating energy was absorbed by the water. For the HCl- exothermic. The temperature decreased from 44,6°C to 31.3°C indicating energy was released by the HCl. b. Calculate how much heat the water lost or gained. Qwater= 2800.6 J → 2.8 x 10ʻJ (answer rounded for sig. figs.)
Transcribed Image Text:6. In a coffe-cup calorimeter, 100.0 of H;0 and 100.0 mL of HCl are mixed. The HCI had an initial temperature of 44.6°C and the water was originally at 24.6 °C. After the reaction, the temperature of both substances is 31.3°C. a. Was the reaction exothermic or endothermic? Explain. For the water- endothermic. The temperature increased from 24.6°C to 31.3°C indicating energy was absorbed by the water. For the HCl- exothermic. The temperature decreased from 44,6°C to 31.3°C indicating energy was released by the HCl. b. Calculate how much heat the water lost or gained. Qwater= 2800.6 J → 2.8 x 10ʻJ (answer rounded for sig. figs.)
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