Allowing mixing of the two volumes, what is the change in entropy when the valve is opened? is A.S the same if one of the volumes contained Ar and the other contained Ne? Match the items in the left column to the appropriate blanks in the sentences on the right. AS-0 AS>0 AS<0 Reset Help If the same gas is on either side of the valve, molecules of the gas are indistinguishable. If the two gases are different, the mixing of the gases. because the individual atoms or because of

Allowing mixing of the two volumes, what is the change in entropy when the valve is opened? is A.S the same if one of the volumes contained Ar and the other contained Ne? Match the items in the left column to the appropriate blanks in the sentences on the right. AS-0 AS>0 AS<0 Reset Help If the same gas is on either side of the valve, molecules of the gas are indistinguishable. If the two gases are different, the mixing of the gases. because the individual atoms or because of

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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At 363 K, one state is twice as likely as the other. The first (more likely) state has an energy of 9.19 kcal/mol and an entropy of 0.915 kcal/mol-K. The other state has an energy of 2.19 kcal/mol more then the first state. What is the entropy of the second (less likely) state?
1. Ammonia can be made from the reaction of nitrogen and hydrogen: N2 (g) + 3 H2 (g) ⟺ 2 NH3 (g) For this reaction, K = 1.6 x 102 and ΔH = -91.8 kcal/mole at 25oC. Is the reaction endothermic or exothermic? Briefly explain. Is there in increase in entropy, a decrease in entropy, or no change in entropy? Briefly explain. At 25oC, is this reaction product favored or reactant favored? Briefly explain. Do you expect this reaction to be spontaneous at all temperatures? Briefly explain.
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. System Change S A few moles of carbon dioxide (CO2) gas. The carbon dioxide is heated from 9.0 °C to 36.0 °C and also expands from a volume of 6.0 L to a volume of 14.0 L. <S0 =S0 >S0 not enough information A few moles of helium (He) gas. The helium expands from a volume of 9.0 L to a volume of 15.0 L while the temperature is held constant at 20.0 °C. <S0 =S0 >S0 not enough information A few grams of liquid ammonia (NH3). The ammonia is heated from -1.0 °C to 2.0 °C. <S0…
7. Consider the following process, in which AH® is 44.0 kJ/mol at 25°C and 40.6 kJ/mol at 100 °C H2O() → H2O(g) (a) If the entropy S for H2O(1) and H2O(g) are 70.0 J.mol.K' and 188.9 J.mol'.K', respectively, calculate AS.gys and ASsurr, each with appropriate algebraic sign at 25°C and at 100 °C. (b) Calculate ASuniv at 25°C and at 100 °C, and predict whether the evaporation of water is spontaneous at each temperature if PH20 = 1 atm.
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. System A few grams of ammonia vapor (NH3). A few moles of nitrogen (N₂) gas. A few moles of nitrogen (N₂) gas. Change The ammonia condenses to a liquid at a constant temperature of -8.0 °C. The nitrogen is cooled from 78.0 °C to 3.0 °C while the volume is held constant at 2.0 L. The nitrogen is heated from -16.0 °C to 12.0 °C and also expands from a volume of 1.0 L to a volume of 10.0 L. AS AS 0 not enough information AS 0 O not enough information O AS 0 not enough information Ś
The change in entropy will be positive for which of the following reactions? Select one: a.BaF2(s) ➜ Ba2+(aq) + 2F–(aq) b.2H2(g) + O2(g) ➜ 2H2O(g) c.2Hg(l) + O2(g) ➜ 2HgO(s) d.2NO2(g) ➜ N2O4(g)
Please answer a,b,c
2. Compute for the total entropy change (AS,ntu) of the reaction below in a room temperature of 293 K. 2Na (s) + Cl2 (g) - 2NACI (s) Substance Na (s) Cl2 (g) NaCl (s) S°U/mol.K) 51.30 223.1 72.10 AH (kJ/mol) -411.0
Using tabulated values of S°, calculate the standard entropy per mole of atoms for the following. Ar. The S° for Ar is 154.843 J/(mol*K). J*mol1*K1 eTextbook and Media O2. The S° for O2 is 205.152 J/(mol*K). J*mol-1*K*1 O3. The S° for O3 is 238.9 J/(mol*K). J*mol 1*K1 C2H6. The S° for C2H6 is 229.2 J/(mol*K). J*mol 1*K1
16. Which among the following represents a positive change in entropy? * O release of thermal energy O a decrease in thermal energy a process that is always spontaneous O an increase in dispersal of matter (molecular disorder)
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. System A few moles of carbon dioxide (CO₂) gas. A few grams of liquid ammonia (NH3). A few moles of carbon dioxide (CO₂) gas. Change The carbon dioxide expands from a volume of 10.0 L to a volume of 13.0 L while the temperature is held constant at 57.0 °C. The ammonia evaporates at a constant temperature of 11.0 °C. The carbon dioxide is cooled from 87.0 °C to -2.0 °C and is also expanded from a volume of 8.0 L to a volume of 11.0 L. AS AS 0 not enough information AS 0 not enough information AS 0 not enough information
What major factor leads to a decreasein entropy as this reaction takes place?