Thermodynamics
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Thermodynamics
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19 Questions

1. Unit of entropy is
2. What is the entropy change (in JK -“1 mol-“1)when one mole of ice is converted into water at0º C? (The enthalpy change for the conversion ofice to liquid water is 6.0 kJmol -“1 at 0ºC)
3. Equal volumes of molar hydrochloric acid andsulphuric acid are neutralized by dil.NaOHsolution and x kcal and y kcal of heat areliberated respectivelyWhich of the following istrue?
4. When 1 mol of a gas is heated at constantvolume - temperature is raised from 298 to 308KIf heat supplied to the gas is 500 J - then whichstatement is correct?
5. According to the third law ofthermodynamics which one of the following10.55quantities for a perfectly crystalline solid is zeroat absolute zero?
6. If ΔH is the change in enthalpy and ΔE thechange in internal energy accompanying agaseous reaction - then
7. 2 mole of an ideal gas at 27ºCtemperature isexpanded reversibly from 2 lit to 20 litFind theentropy change (R= 2 cal/mol K)
8. The entropy change in the fusion of onemole of a solid melting at 27ºC(Latent heat offusion - 2930 Jmol -“1) is:
9. For a cyclic process - which of the following isnot true?
10. Identify the correct statement regardingentropy:
11. For a reaction in which all reactants andproducts are liquids - which one of the followingequations is most applicable?
12. In a closed insulated container - a liquid isstirred with a paddle to increase thetemperature - which of the following is true?
13. For a reaction in which all reactants andproducts are liquids - which one of the followingequations is most applicable?
14. In a closed insulated container - a liquid isstirred with a paddle to increase thetemperature - which of the following is true?
15. Adiabatic expansions of an ideal gas isaccompanied by
16. The entropy change in the fusion of onemole of a solid melting at 27ºC(Latent heat offusion - 2930 Jmol -“1) is:
17. During isothermal expansion of an ideal gas - its
18. Which of the following pairs of a chemicalreaction is certain to result in a spontaneousreaction?
19. The molar heat capacity of water at constantpressure is 75 JK -“1 mol-“1When 1kJ of heat issupplied to 100 g of water - which is free toexpand - the increase in temperature of water is

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