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Newest Entropy Questions

1. 1. In which of the following processes would the entropy of the system increase?a. A liquid forming from a gas. b. A solid
   1. 1 answer
   2. asked by cherry
   3. 1,501 views
2. Predict how the entropy of the substance is affected in each of the processes.A. H2O(l,300K)⟶H2O(s,273K) B.
   1. 3 answers
   2. asked by chelsie
   3. 2,960 views
3. 1. For which process is dS system negative?A)evaporation of 1 mol of CCl4(l) B)compressing 1 mol of Ne at constant temperature
   1. 3 answers
   2. asked by .
   3. 1,764 views
4. A 200 kg block of ice at 0.0c is placed in a large lake the temperature of the lake is just slightly higher than 0 C and the ice
   1. 0 answers
   2. asked by Stan
   3. 851 views
5. 0.05 kg of carbon dioxide (molecular weight = 44) is compressed from 1 bar, 15°C, untilthe pressure is 8.3 bar, and the volume
   1. 3 answers
   2. asked by adrian
   3. 1,339 views
6. Calculate ∆S universe for the process H2O (s) → H2O (l) given that∆Hfusion = 6.02 kJ/mol and ∆S system = 22.1 J/K mol .
   1. 0 answers
   2. asked by Mi
   3. 534 views
7. Calculate the entropy change accompanying conversion of 1 mole of ice at 273 K and 1 atm pressure into steam at 373 K and 1 atm
   1. 1 answer
   2. asked by Mahesh
   3. 1,411 views
8. true or falseEntropy always tend to favor mixing Mixing result in positive change in entropy Entropy allows endothermic
   1. 1 answer
   2. asked by Jazz
   3. 1,224 views
9. fus = 12.5 and vap = 93.2 both j/k x molDetermine the entropy change when 7.30 mol of HCL(g) condenses at atmospheric pressure.
   1. 0 answers
   2. asked by Talaya
   3. 794 views
10. Predict how the entropy of the substance is affected in the following processes:a) O2 (g,200 kPa, 300k) --> O2 (g, 100, 300k)
    1. 4 answers
    2. asked by Alexis
    3. 8,978 views
11. A 298.0 kg block of ice at 0 C is placed in a large lake. The temperature of the lake is just slightly higher than 0 C, and the
    1. 0 answers
    2. asked by Kimmy
    3. 871 views
12. 1/2 mole CCl4 @ 25 C was mixed with 1/2 mole CH2Cl2 @ 25C. The final T was 27 C. Calculate delta S mixing, delta S for CCl4 on
    1. 1 answer
    2. asked by Anonymous
    3. 417 views
13. Find the entropy change of the universe when 2 moles of water freezes at -10 degrees celsius. The delta G for the freezing of
    1. 0 answers
    2. asked by Linda
    3. 1,000 views
14. A 72.2 g ice cube floats in the Arctic Sea. The temperature and pressure of the system and surroundings are at 1 atm and 0°C.
    1. 0 answers
    2. asked by Bree
    3. 664 views
15. A 95.1-g ice cube is initially at 0.0°C.(b) What is the change in entropy of the environment in this process? ___________J/kg
    1. 1 answer
    2. asked by Ame
    3. 594 views
16. Calculate the change in entropy that occurs when 17.68 g of ice at -12.7°C is placed in 54.05 g of water at 100.0°C in a
    1. 1 answer
    2. asked by Sarah
    3. 4,307 views
17. What is the entropy change to the surroundings when 1 mol of ice melts in someone’s hand if the hand temperature is 32°C?
    1. 1 answer
    2. asked by zak
    3. 982 views
18. If 1 mol of ice melts at its melting point of 273 K, the entropy change for the ice is 22.0 J/K. If the ice melts in someone’s
    1. 2 answers
    2. asked by MONICA
    3. 1,692 views
19. What is the entropy change to the surroundings when 1 mol of ice melts in someone’s hand if the hand temperature is 32°C?
    1. 2 answers
    2. asked by MONICA
    3. 2,292 views
20. If 1 mol of ice melts at its melting point of 273 K, the entropy change for the ice is 22.0 J/K. If the ice melts in someone’s
    1. 1 answer
    2. asked by Taylor
    3. 969 views
21. Indicate which of the following has the highest entropy at 298 K.0.5 g of HCN 1 mol of HCN 2 kg of HCN 2 mol of HCN All of the
    1. 2 answers
    2. asked by Taylor
    3. 4,380 views
22. A rxn has delta H ^0 rxn=-112kj and delta S^0 rxn =354 J/K. at what temp is the change in entropy for the rxn equal to the
    1. 3 answers
    2. asked by ALISON
    3. 1,119 views
23. Calculate ΔSfus and ΔSvap for HF.Determine the entropy change when 7.60 mol of HF(l) freezes at atmospheric pressure. I
    1. 4 answers
    2. asked by Srah
    3. 20,782 views
24. Calculate ΔSfus and ΔSvap for HF.Determine the entropy change when 7.60 mol of HF(l) freezes at atmospheric pressure. I
    1. 8 answers
    2. asked by Brian
    3. 2,820 views
25. Consider a system consisting of two glass bulbs, each with volume V, and each containing n moles of gas. Bulb A contains nA
    1. 0 answers
    2. asked by Becky
    3. 462 views
26. One end of a metal rod is in contact with a thermal reservoir at 731 K, and the other end is in contact with a thermal reservoir
    1. 1 answer
    2. asked by maria
    3. 497 views
27. 3.5 moles of steam at 100 C are condensed at 100 C and the resulting water is cooled to 42.3 C. Calculate the entropy change for
    1. 1 answer
    2. asked by baranse
    3. 612 views
28. Consider a liquid at 90 bar and 40 °C. What is the change in entropy of the substance as you change the conditions to 1 bar and
    1. 0 answers
    2. asked by pirate
    3. 498 views
29. What is the entropy change for the vaporization of 2.6 mol H2O(§¤) at 100◦C and 1 atm? dH= 40700 J/molAnswer in units of J/K
    1. 1 answer
    2. asked by Samantha
    3. 3,190 views
30. A reaction has delta H_rxn= -125 kJ and delta S_rxn= 324 J/K.At what temperature is the change in entropy for the reaction equal
    1. 0 answers
    2. asked by Kyle
    3. 549 views
31. One end of a copper rod is immersed in boiling water at 100 degrees celsius and the other end in an ice-water mixture at 0
    1. 0 answers
    2. asked by Amanda
    3. 1,364 views
32. A reaction has deltaHrxn=-127 kJ and delta S rxn=314 J/K. At what temperature is the change in entropy for the reaction equal to
    1. 2 answers
    2. asked by Natash
    3. 1,635 views
33. 4 moles of water are heated from 240 K to 310. find delta entropy and graph entropy against K . Info : delta H fusion of water
    1. 1 answer
    2. asked by kat
    3. 608 views
34. Calculate the entropy change of the universe (in J/K) when 12.2 g of chlorine are melted in a laboratory at 24.8 oC. Report your
    1. 0 answers
    2. asked by Jayme
    3. 501 views
35. Calculate the entropy change of the universe (in J/K) when 43.4 g of ethanol vapor is condensed in a laboratory at 20.4 oC.
    1. 2 answers
    2. asked by Student
    3. 657 views
36. What change in entropy occurs when a 27.9-g ice cube at -12 C is transformed into steam at 115 C?Add the entropy changes due to:
    1. 1 answer
    2. asked by jean
    3. 4,078 views
37. 1. Cl2(g) -> 2Cl(g)2. H2(g) at 5.0 atm -> H2(g) at 1.0 atm 3. sublimation of solid CO2 4. 2H2(g) + O2(g) -> 2H20(g) 5. PCl5(g)
    1. 1 answer
    2. asked by alexa
    3. 939 views
38. Standard entropies for substances are defined at a pressure of exactly 1 bar or exactly 1 atm in different books. For gases,
    1. 0 answers
    2. asked by Jennifer
    3. 591 views
39. When atmospheric pressure is 700. mmHg, water boils at 97.714 degrees C. Calculate entropy change of water if 50.0 grams is
    1. 0 answers
    2. asked by Chris
    3. 684 views