3. The standard molar entropy of H,(g) is Sº = 130.7 J mol¬1 K-1 at 298 K. Úse this value, together with Boltzmann's equation, to determine the number of microstates, W, for one mole of H,(g) at 298 K and 1 bar. Reflect on the magnitude of your calculated value by describing how to write the number in deci- mal form. [Hint: To write the number 1 × 1015, for example, in decimal form, we would write down a 1 followed by 15 zeros. The relationship In W = 2.303 log W might also be useful.]

3. The standard molar entropy of H,(g) is Sº = 130.7 J mol¬1 K-1 at 298 K. Úse this value, together with Boltzmann's equation, to determine the number of microstates, W, for one mole of H,(g) at 298 K and 1 bar. Reflect on the magnitude of your calculated value by describing how to write the number in deci- mal form. [Hint: To write the number 1 × 1015, for example, in decimal form, we would write down a 1 followed by 15 zeros. The relationship In W = 2.303 log W might also be useful.]

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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Chemistry
A chemical engineer is studying the two reactions shown in the table below. In each case, he fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 146.0 °C and constant total pressure. Then, he measures the reaction enthalpy AH and reaction entropy AS of the first reaction, and the reaction enthalpy AH and reaction free energy AG of the second reaction. The results of his measurements are shown in the table. Complete the table. That is, calculate AG for the first reaction and AS for the second. (Round your answer to zero decimal places.) Then, decide whether, under the conditions the engineer has set up, the reaction is spontaneous, the reverse reaction is spontaneous, or neither forward nor reverse reaction is spontaneous because the system is at equilibrium.
22. Although the standard molar entropy, (AS), of a lot of chemicals are available, (AS) of most chemicals, especially the newly discovered chemicals are NOT available, you have to calculate the values of the (AS). The following table lists the standard molar entropy of a few compounds. The following reaction occurs when sucrose (cane sugar) is metabolized by the body. 0 C12H22O11(s) + 12 O₂(g) → 12 CO₂(g) + 11 H₂O(1) ASrxn = 512.01 J/K What is the standard molar entropy, 50 of sucrose solid? Substance So J mol K Substance sº G (molk) CO(g) 197.9 CO₂(g) 213.6 H₂O(g) MgO(s) 188.83 26.8 69.91 0₂(g) H₂O(1) Mg(OH)2 (s) C(graphite, s) 63.24 205.0 5.69 J mol K N₂(g) 191.50