Thermodynamics
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Thermodynamics
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19 Questions

1. Achemical reaction will be spontaneous if it isaccompanied by a decrease of
2. For a cyclic process - which of the following isnot true?
3. 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)
4. One mole of an ideal gas at 300 K is expanded isothermally from an initial volume of 1 litre to 10 litres The E for this process is (R=2 calmol-1 K-1)
5. Adiabatic expansions of an ideal gas isaccompanied by
6. 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
7. 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
8. In a closed insulated container - a liquid isstirred with a paddle to increase thetemperature - which of the following is true?
9. 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?
10. The entropy change in the fusion of onemole of a solid melting at 27ºC(Latent heat offusion - 2930 Jmol -“1) is:
11. According to the third law ofthermodynamics which one of the following10.55quantities for a perfectly crystalline solid is zeroat absolute zero?
12. Achemical reaction will be spontaneous if it isaccompanied by a decrease of
13. If ΔH is the change in enthalpy and ΔE thechange in internal energy accompanying agaseous reaction - then
14. 2 mole of an ideal gas at 27ºCtemperature isexpanded reversibly from 2 lit to 20 litFind theentropy change (R= 2 cal/mol K)
15. For a cyclic process - which of the following isnot true?
16. During isothermal expansion of an ideal gas - its
17. Identify the correct statement regardingentropy:
18. Unit of entropy is
19. If ΔH is the change in enthalpy and ΔE thechange in internal energy accompanying agaseous reaction - then

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