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Mark the correct statement....

Mark the correct statement.

A

For a chemical reaction to be feasible, `Delta G` should be zero

B

Entropy is a measure of order in a system

C

For a chemical reaction to be feasible, `Delta G` should be positive

D

The total energy for an isolated system is constant

Text Solution

Verified by Experts

The correct Answer is:
D
Entropy is measure of disorder in a system. For a chemical reaction to be feasible. `Delta G`. Should be negative.
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MARVEL PUBLICATION-CHEMICAL THERMODYNAMICS AND ENERGETICS-MULTIPLE CHOICE QUESTIONS (Gibbs Free Energy)
  1. A chemical reaction will be spontaneous if it is accompanied by a decr...

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  2. The standard Gibb's free energy change, DeltaG^(@) is related to equil...

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  3. Mark the correct statement.

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  4. One mole ofan ideal gas is allowed to expand freely and adiabatically ...

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  5. According to the second law of thermodynamics, a process (reaction) is...

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  6. Mechanical work is specially important in systems that contain

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  7. The favourable conditions for a spontaneous reaction are

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  8. Free enegry , G = H - TS, is state function that indicates whther a re...

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  9. The enthalpy of vaporization of a substance is 840 J per mol and its b...

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  10. If the enthalpy of vaporisation of water is 186.5 J mol^(-1), then ent...

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  11. If 900J//g of heat is exchanged at boiling point of water then water...

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  12. Two moles of ideal gas at 27^(@)C temperature is expanded reversibly f...

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  13. What is the free energy change, 'DeltaG' When 1.0 mole of water at 100...

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  14. Calculate the temperature at which DeltaG=-5.2 kJmol^-1,DeltaH=145.6kJ...

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  15. Calculate the free energy change for the following reaction at 300 K. ...

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  16. One mole of a perfect gas expands isothermally to ten times its origin...

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  17. Which of the following reaction is said to be enthalpy driven?

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  18. For the Ararr B process Given : Delta H =+ve, Delta S =-ve, T Delta ...

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  19. Most disordered system is

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  20. A (G(1)" free energy") rarr B(G(2)" free energy") The above reaction...

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