Chapter 18, Problem 93

What is meant by the standard state of a substance?

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Hello everyone today. We have been given the following problem, determine if the following statement about the standard state of a substance is true or false and correct if it is false. The standard state of a substance is the most stable solid form of a pure substance at 0°C and one atmosphere pressure for salutes, one Moeller at 0°C. So this statement is actually false. It is the most stable and by the standard state of a substance is most stable of a pure substance at 25°C and one atmosphere pressure. Also first saw Utes, It's going to be one Moller at 25°C. So ultimately it is false because the most stable form of a standard set of a substance of a pure substance is going to be at 25°C and one atmosphere pressure. And then it's one molar at 25°C. And with that we've answered the question overall. I hope that this helped and until next time.

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Related Practice

Textbook Question

Consider a twofold expansion of 1 mol of an ideal gas at 25 °C in the isolated system shown in Figure 18.1. (a) What are the values of ∆H, ∆S, and ∆G for the process?

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Textbook Question

Consider a twofold expansion of 1 mol of an ideal gas at 25 °C in the isolated system shown in Figure 18.1. (b) How does this process illustrate the second law of thermodynamics?

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Textbook Question

Use the values of of ∆G°f in Appendix B to calculate the stan-dard free-energy change for the synthesis of dichloroethane from ethylene and chlorine: C2H41g2 + Cl21g2S CH2ClCH2Cl1l2 Is it possible to synthesize dichloroethane from gaseous C2H4 and Cl2, each at 25 °C and 1 atm pressure?

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Textbook Question

Ethanol is manufactured in industry by the hydration of ethylene: Using the data in Appendix B, calculate ∆G° and show that this reaction is spontaneous at 25 °C. Why does this reaction become nonspontaneous at higher temperatures? Estimate the temperature at which the reaction becomes nonspontaneous.