Given the values of AH and AS, which of the following changes will be spontaneous at constant T and P? (Select all that apply.) O AH = +25 kJ, AS = +8.0 J/K, T= 300. K O AH = +23 kJ, AS =+100. J/K, T= 300. K O AH =-10. kJ, AS = +8.0 J/K, T= 295 K AH=-10. kJ, AS =-40. J/K, T= 100. K None of the above.

Given the values of AH and AS, which of the following changes will be spontaneous at constant T and P? (Select all that apply.) O AH = +25 kJ, AS = +8.0 J/K, T= 300. K O AH = +23 kJ, AS =+100. J/K, T= 300. K O AH =-10. kJ, AS = +8.0 J/K, T= 295 K AH=-10. kJ, AS =-40. J/K, T= 100. K None of the above.

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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Q3
Be sure to answer all parts. For the gaseous reaction of carbon monoxide and chlorine to form phosgene (COCl₂), perform the following calculations. (a) Calculate the AS at 298 K (AH° = −220. kJ/mol and AG° = −206 kJ/mol). kJ/mol K (b) Assuming that AS and AH change little with temperature, calculate AG at 450. K. kJ/mol
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Green plants utilize sunlight to convert CO2 and H2O to glucose (C6H1206) and 02. Use the information in the table below to calculate AHo Substance A H;°(kJ/mol) S° (J/mol*K) CO2(g) -393.5 213.2 H20(1) -285.8 69.9 C6H1206(s) -1273.3 212.1 O2(g) 205.0 134 kJ 2802.5 kJ Cannot be determined – more information is needed. -594 kJ -256.5 kJ
8. Note: Please don't write on a paper, I can't understand handwrittens.
Below is the reaction for the evaporation of water. H2O (I) H20 (g) AH°f H2O (1)= -285.8 kJ/mole ; H20 (g) = -241.8 kJ/mole %3D Calculate AH*rxn for this process. This is the reaction that happens when your sweat evaporates. Why is this a cooling mechanism for your body? How much sweat would have to evaporate from a person's skin to cool the body by 0.5 C? Assume this person has a body mass of 150 Ibs and the specific heat capacity of the body is 4.0 J/g °C. 1 Ib. = 0.454 kg
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