Thermodynamics
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Thermodynamics
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19 Questions

1. 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?
2. The entropy change in the fusion of onemole of a solid melting at 27ºC(Latent heat offusion - 2930 Jmol -“1) is:
3. In a closed insulated container - a liquid isstirred with a paddle to increase thetemperature - which of the following is true?
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. Hydrogen has an ionisation energy of 1311kJ mol-“1 and for chlorine it is 1256 kJmol -“1.Hydrogen forms H + (aq) ions but chlorine doesnot form Cl+ (aq) ions because
6. 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)
7. In a closed insulated container - a liquid isstirred with a paddle to increase thetemperature - which of the following is true?
8. Which of the following pairs of a chemicalreaction is certain to result in a spontaneousreaction?
9. According to the third law ofthermodynamics which one of the following10.55quantities for a perfectly crystalline solid is zeroat absolute zero?
10. According to the third law ofthermodynamics which one of the following10.55quantities for a perfectly crystalline solid is zeroat absolute zero?
11. Achemical reaction will be spontaneous if it isaccompanied by a decrease of
12. 2 mole of an ideal gas at 27ºCtemperature isexpanded reversibly from 2 lit to 20 litFind theentropy change (R= 2 cal/mol K)
13. 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)
14. 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)
15. During isothermal expansion of an ideal gas - its
16. Hydrogen has an ionisation energy of 1311kJ mol-“1 and for chlorine it is 1256 kJmol -“1.Hydrogen forms H + (aq) ions but chlorine doesnot form Cl+ (aq) ions because
17. For a cyclic process - which of the following isnot true?
18. For a reaction in which all reactants andproducts are liquids - which one of the followingequations is most applicable?
19. If ΔH is the change in enthalpy and ΔE thechange in internal energy accompanying agaseous reaction - then

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