For each system listed in the first column of the table below, decide (if possible) whether the change described in the second column will increase the entropy Sof the system, decrease S, or leave S unchanged. If you don't have enough information to decide, check the "not enough information" button in the last column.Note for advanced students: you may assume ideal gas and ideal solution behaviour.SystemChangeASO AS < 0300 mL of a solution made fromO AS = 0potassium bromide (KBr) dissolvedin water.0.5 g of KBr crystallizes out of thesolution, without changing thetemperature.O AS > 0not enoughinformationO AS < 0A solution made of potassiumO AS = 050. mL of pure water is added tobromide (KBr) in water, at 15°C.the solution.O AS > 0not enoughinformationO AS < 0A mixture of oxygen (O,) gas andO AS = 0An additional 2.0 L of pure Kr gasis added to the mixture, with thekrypton (Kr) gas at 3 atm and- 12°C.O AS > 0pressure kept constant at 3 atm.not enoughinformation

Entropy, the measure of a system's thermal energy per unit temperature that is unavailable for doing useful work. Entropy is also a measure of the molecular disorder, or randomness, of a system.(a) In the first case, the KBr is dissolved to form a solution and then crystallizes out of the solution. There is no change in temperature. The aqueous state is converted to a solid-state which decreases the randomness of the substance. Therefore, the entropy of the system decreases. ΔS < 0. (b) In this case, there is a change in the volume of the solution. An increase in volume results in a decrease in concentration. Therefore, the entropy of a system increases as the concentrations of the components decrease. Changes in volume will lead to changes in entropy. The larger the volume the more ways there are to distribute the molecules in that volume; the more ways there are to distribute the molecules (energy), the higher the entropy. An increase in volume will increase entropy. ΔS > 0 (c) Addition of inert gas at constant pressure. In this case, the total volume will increase. Hence, the number of moles per unit volume will decrease. The larger the volume the more ways there are to distribute the molecules in that volume; the more ways there are to distribute the molecules (energy), the higher the entropy. An increase in volume will increase entropy. ΔS > 0

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For each system listed in the first column of the table below, decide (if possible) whether the change described in the second column will increase the entropy S of the system, decrease S, or leave S unchanged. If you don't have enough information to decide, check the "not enough information" button in the last column Note for advanced students: you may assume ideal gas and ideal solution behaviour. System Change AS O AS < 0 300 mL of a solution made from O AS = 0 0.5 g of KBr crystallizes out of the solution, without changing the temperature. potassium bromide (KBr) dissolved O AS > 0 in water. not enough information O AS < 0 O AS = 0 A solution made of potassium bromide (KBr) in water, at 15°C. 50. mL of pure water is added to the solution. O AS > 0 not enough information O AS < 0 A mixture of oxygen (O,) gas and O AS = 0 An additional 2.0 L of pure Kr gas is added to the mixture, with the krypton (Kr) gas at 3 atm and - 12°C. O AS > 0 pressure kept constant at 3 atm. not enough

For each system listed in the first column of the table below, decide (if possible) whether the change described in the second column will increase the entropy S of the system, decrease S, or leave S unchanged. If you don't have enough information to decide, check the "not enough information" button in the last column Note for advanced students: you may assume ideal gas and ideal solution behaviour. System Change AS O AS < 0 300 mL of a solution made from O AS = 0 0.5 g of KBr crystallizes out of the solution, without changing the temperature. potassium bromide (KBr) dissolved O AS > 0 in water. not enough information O AS < 0 O AS = 0 A solution made of potassium bromide (KBr) in water, at 15°C. 50. mL of pure water is added to the solution. O AS > 0 not enough information O AS < 0 A mixture of oxygen (O,) gas and O AS = 0 An additional 2.0 L of pure Kr gas is added to the mixture, with the krypton (Kr) gas at 3 atm and - 12°C. O AS > 0 pressure kept constant at 3 atm. not enough

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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For each system listed in the first column of the table below, decide (if possible) whether the change described in the second column will increase the entropy S of the system, decrease S, or leave S unchanged. If you don't have enough information to decide, check the "not enough information" button in the last column. Note for advanced students: you may assume ideal gas and ideal solution behaviour. System A mixture of oxygen (O₂) gas and hydrogen (H₂) gas at 3 atm and 7°C. A liter of seawater at 15°C. 300 mL of a solution made from sodium iodide (Nal) dissolved in water. Change An additional 2.0 L of pure H₂ gas is added to the mixture, with the pressure kept constant at 3 atm. The seawater is passed through a reverse-osmosis filter, which separates it into 750. mL of pure water and 250. mL of brine (very salty water). 0.5 g of Nal crystallizes out of the solution, without changing the temperature. O O AS 0 O As AS 0 not enough information O not enough. information O AS 0 not enough…
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Review I Co Part A MISSED THIS? Read Section 19.6 (Papes 863 - 867): Watch KCV 19.6. IWE 19.4. AH =-98 kJ, AS-145 J/K, T = 297 K Calculate the change in Gibbs free energy for each of the following seots of AH, ASn, and T. (Assume that all reactants and products are in their standard states.) Express your answer as an integer. AG = kJ Submit Request Answer Part B AHan =-98 kJ, ASan =-145 J/K, T = 850 K Express your answer as an integer. AG kJ
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For each system listed in the first column of the table below, decide (if possible) whether the change described in the second column will increase the entropy S of the system, decrease S, or leave S unchanged. If you don't have enough information to decide, check the "not enough information" button in the last column. Note for advanced students: you may assume ideal gas and ideal solution behaviour. System Change AS AS 0 not enough information AS 0 both at 37.°C. flows through the bag into the sucrose solution. not enough information AS 0 and 22°C. pressure kept constant at 2 atm. not enough information
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