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Ch.18 - Thermodynamics: Entropy, Free Energy & Equilibrium

Chapter 18, Problem 72

Reduction of mercury(II) oxide with zinc gives metallic mercury: (b) Estimate at what temperature, if any, the reaction will become nonspontaneous

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Hello everyone today. We have the following problem. Consider the following redox reaction between hydrogen peroxide and ozone predict the temperature range, if any, in which the reaction becomes non spontaneous. So the spontaneity of a reaction can be determined using these signs of our change in entropy and our change and our entropy. So first we have to determine the values for that. So our change in our entropy is negative 800. kg jewels or in other words it is a negative entropy. Our entropy is positive to 25. jewels per kelvin and this is a positive value. So when we have a negative envelop but a positive entropy, this is going to indicate that our reaction is going to be spontaneous at all temperatures. In other words, this reaction is not going to be non spontaneous at all. And with that we have answered the question overall, I hope this helped. And until next time.