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The condition for spontaneity of a proce...

The condition for spontaneity of a process is-

A

lowering of entropy at constant temperature & pressure

B

lowering of gibbs free energy of the system at constantn temperature and pressure

C

Increase in entropy of the system at constant temperature and pressure

D

increase in Gibbs free energy of the universe at constant temperature and pressure.

Text Solution

Verified by Experts

The correct Answer is:
B
The condition of spontaneity for a reaction to occur at constannt T and P is `DeltaG lt0`.
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CHHAYA PUBLICATION-CHEMICAL THERMODYNAMICS-ENTRANCE QUESTION BANK
  1. Which of the following statement is true-

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  2. Identify the correct statement in a chemical reaction-

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  3. The condition for spontaneity of a process is-

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  4. P*V Work done by an ideal gaseous system at constant volume is (E is i...

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  5. Mixing of two different ideal gases under isothermal reversible condit...

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  6. For an isothermal expansion of an ideal gas, the correct combination o...

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  7. The change in entropy (dS) is defined as-

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  8. DeltaH for cooling 2 mol ideal monoatomic gas from 225^(@)C to 125^(@)...

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  9. For a spontaneous process, correct statement (s) is (are)-

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  10. Given: C+O(2)toCO(2),DeltaH^(0)=-xkJ 2CO+O(2)to2CO(2),DeltaH^(0)-y k...

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  11. The enthalpy of vaporisation of a certain liquid at its boiling point ...

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  12. DeltaH and DeltaS of a certain reaction are -400 kJ*mol^(-1) and -20kJ...

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  13. For the reaction X(2)Y(4)(l) to 2XY(g) at 300K the values of DeltaU an...

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  14. For the reaction 2SO(2)(g)+O(2)(g)hArr2SO(3)(g) at 300K, value of Delt...

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  15. The condition for a reaction to occur spontaneously is -

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  16. During a reversible adiabatic process, the pressure of a gas is found ...

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  17. The heat of neutralisation of a strong base and a strong acid is 13.7 ...

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  18. The entropy change involved in the isothermal reversible expansion of ...

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  19. Among the following expressions which one is incorrect-

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  20. A cylinder filled with 0.04 mol of ideal gas expands reversible from 5...

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