Interpretation: Whether true or not, all spontaneous processes are exothermic and should be explained.

Concept introduction: Gibbs's free energy measures the maximum amount of work that may be done in a thermodynamic system while the temperature and pressure are constant. It is also known as the Gibbs function, Gibbs energy, or free enthalpy.

Expert Solution & Answer

Answer to Problem 78A

Not all spontaneous processes are exothermic.

Explanation of Solution

Exothermic is a process that releases energy from the system. Since Gibbs's free energy determines spontaneity, not all spontaneous processes are exothermic. If Gibbs's free energy for a process is negative, then the process is considered spontaneous.

Therefore, not all spontaneous processes are not exothermic.

Conclusion

Not all spontaneous processes are exothermic.

Chapter 18, Problem 77A

Chapter 18, Problem 79A

Chapter 18 Solutions

Chemistry 2012 Student Edition (hard Cover) Grade 11

Ch. 18.1 - Prob. 1LC Ch. 18.1 - Prob. 2LC Ch. 18.1 - Prob. 3LC Ch. 18.1 - Prob. 4LC Ch. 18.1 - Prob. 5LC Ch. 18.2 - Prob. 7SP Ch. 18.2 - Prob. 8SP Ch. 18.2 - Prob. 9LC Ch. 18.2 - Prob. 10LC Ch. 18.2 - Prob. 11LC

Ch. 18.2 - Prob. 12LC Ch. 18.2 - Prob. 13LC Ch. 18.2 - Prob. 14LC Ch. 18.2 - Prob. 15LC Ch. 18.2 - Prob. 16LC Ch. 18.3 - Prob. 17SP Ch. 18.3 - Prob. 18SP Ch. 18.3 - Prob. 19SP Ch. 18.3 - Prob. 20SP Ch. 18.3 - Prob. 21SP Ch. 18.3 - Prob. 22SP Ch. 18.3 - Prob. 23SP Ch. 18.3 - Prob. 24SP Ch. 18.3 - Prob. 25LC Ch. 18.3 - Prob. 26LC Ch. 18.3 - Prob. 27LC Ch. 18.3 - Prob. 28LC Ch. 18.3 - Prob. 29LC Ch. 18.3 - Prob. 30LC Ch. 18.3 - Prob. 31LC Ch. 18.3 - Prob. 32LC Ch. 18.4 - Prob. 33SP Ch. 18.4 - Prob. 34SP Ch. 18.4 - Prob. 35SP Ch. 18.4 - Prob. 36SP Ch. 18.4 - Prob. 37LC Ch. 18.4 - Prob. 38LC Ch. 18.4 - Prob. 39LC Ch. 18.4 - Prob. 40LC Ch. 18.4 - Prob. 41LC Ch. 18.4 - Prob. 42LC Ch. 18.4 - Prob. 43LC Ch. 18.4 - Prob. 44LC Ch. 18.4 - Prob. 45LC Ch. 18.5 - Prob. 46LC Ch. 18.5 - Prob. 47LC Ch. 18.5 - Prob. 48LC Ch. 18.5 - Prob. 49LC Ch. 18.5 - Prob. 50LC Ch. 18.5 - Prob. 51LC Ch. 18.5 - Prob. 52LC Ch. 18.5 - Prob. 53LC Ch. 18 - Prob. 54A Ch. 18 - Prob. 55A Ch. 18 - Prob. 56A Ch. 18 - Prob. 57A Ch. 18 - Prob. 58A Ch. 18 - Prob. 59A Ch. 18 - Prob. 60A Ch. 18 - Prob. 61A Ch. 18 - Prob. 62A Ch. 18 - Prob. 63A Ch. 18 - Prob. 64A Ch. 18 - Prob. 65A Ch. 18 - Prob. 66A Ch. 18 - Prob. 67A Ch. 18 - Prob. 68A Ch. 18 - Prob. 69A Ch. 18 - Prob. 70A Ch. 18 - Prob. 71A Ch. 18 - Prob. 72A Ch. 18 - Prob. 73A Ch. 18 - Prob. 74A Ch. 18 - Prob. 75A Ch. 18 - Prob. 76A Ch. 18 - Prob. 77A Ch. 18 - Prob. 78A Ch. 18 - Prob. 79A Ch. 18 - Prob. 80A Ch. 18 - Prob. 81A Ch. 18 - Prob. 82A Ch. 18 - Prob. 83A Ch. 18 - Prob. 84A Ch. 18 - Prob. 85A Ch. 18 - Prob. 86A Ch. 18 - Prob. 87A Ch. 18 - Prob. 88A Ch. 18 - Prob. 89A Ch. 18 - Prob. 90A Ch. 18 - Prob. 91A Ch. 18 - Prob. 92A Ch. 18 - Prob. 93A Ch. 18 - Prob. 94A Ch. 18 - Prob. 95A Ch. 18 - Prob. 96A Ch. 18 - Prob. 97A Ch. 18 - Prob. 98A Ch. 18 - Prob. 99A Ch. 18 - Prob. 100A Ch. 18 - Prob. 101A Ch. 18 - Prob. 102A Ch. 18 - Prob. 103A Ch. 18 - Prob. 104A Ch. 18 - Prob. 105A Ch. 18 - Prob. 106A Ch. 18 - Prob. 107A Ch. 18 - Prob. 108A Ch. 18 - Prob. 109A Ch. 18 - Prob. 110A Ch. 18 - Prob. 114A Ch. 18 - Prob. 115A Ch. 18 - Prob. 116A Ch. 18 - Prob. 117A Ch. 18 - Prob. 118A Ch. 18 - Prob. 119A Ch. 18 - Prob. 120A Ch. 18 - Prob. 121A Ch. 18 - Prob. 122A Ch. 18 - Prob. 123A Ch. 18 - Prob. 124A Ch. 18 - Prob. 125A Ch. 18 - Prob. 126A Ch. 18 - Prob. 127A Ch. 18 - Prob. 128A Ch. 18 - Prob. 129A Ch. 18 - Prob. 130A Ch. 18 - Prob. 131A Ch. 18 - Prob. 132A Ch. 18 - Prob. 133A Ch. 18 - Prob. 134A Ch. 18 - Prob. 1STP Ch. 18 - Prob. 2STP Ch. 18 - Prob. 3STP Ch. 18 - Prob. 4STP Ch. 18 - Prob. 5STP Ch. 18 - Prob. 6STP Ch. 18 - Prob. 7STP Ch. 18 - Prob. 8STP Ch. 18 - Prob. 9STP

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