Answered: i. Predict the signs of ΔG, ΔS, and ΔH for experiment 3. Explain your reasoning. For the following questions consider the dissolution of ammonium chloride…

Chemistry

10th Edition

ISBN: 9781305957404

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

Publisher: Cengage Learning

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Question

i. Predict the signs of ΔG, ΔS, and ΔH for experiment 3. Explain your reasoning.

For the following questions consider the dissolution of ammonium chloride in water.

iii. What is the driving force for the change? Use the equation, ΔG=ΔH − TΔSΔG=ΔH − TΔS, to explain your reasoning.

iv. Is there a temperature at which equilibrium will be established for the dissolution of ammonium chloride? Justify your answer.

B. A 5.0 g sample of sodium chloride is added to 10.0mL of water at 20.0° C. Upon mixing, the salt dissolves and the temperature of the mixture is measured. The
experiment is repeated with ammonium chloride and again with calcium chloride. The data in the table summarizes the results:
Experiment Salt
T2
1
NaCl
20.0 °C 20.0 °C
2
NHẠCI 20.0 °C 5.0 °C
CaCl2
20.0 °C
35.0 °C

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