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A reaction which is spontaneous and acco...

A reaction which is spontaneous and accompanied by decrease of randomness must be exothermic.
All exothermic reactions are accompanied by decrease of randomness.

A

If both (A) and (R ) are correct, and (R ) is the correct explanation for (A).

B

If the both (A) and (R ) are correct, but(R ) is not a correct explanation for (A).

C

If (A) is correct, but (R ) is incorrect.

D

If (A) is incorrect, but (R ) is correct.

Text Solution

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Exothermic reaction may also be accompained with increases of entropy.
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CENGAGE CHEMISTRY ENGLISH-THERMODYNAMICS-Exercises (Assertion-Reasoning)
  1. Assertion (A): The thermodynamic factor which determines the spontane...

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  2. Assertion (A): The Joules -Thomon coefficient for an ideal gas is zer...

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  3. Assertion (A): Enthalpy of graphite is lower than that of diamond. R...

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  4. Assertion: The enthalpy of formation of gaseous oxygen molecules at 29...

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  5. Assertion (A): Heat of neutralisation for both HNO(3) and HCI with NaO...

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  6. Assertion (A): Decrease in free energy causes spontaneous reaction ...

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  7. Many endothermic reactions that are not spontaneous at room temperatur...

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  8. Assertion (A): The enthalpy of formation of H(2)O(l) is greater than t...

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  9. Assertion (A): For a particular reaction, heat of combustion at consta...

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  10. Assertion (A): The enthalpy of both graphite and diamond is taken to ...

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  11. Assertion (A): The heat of neutralisation of perchloric acid, HCIO(4),...

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  12. Assertion (A): The Heat of ionisation of water is equal to the heat o...

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  13. Assertion (A): The enthalpy of formation of HCI is equal to the bond e...

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  14. Assertion (A): Pressure, volume, and temperature are all extensive pro...

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  15. Assertion (A): When a gas at high pressure expands against vacuum, th...

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  16. Assertion: When a real gas is allowed to expand adiabatically through ...

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  17. Assertion : There is no change in internal energ in a cyclic process. ...

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  18. Assertion (A): An exothermic process, non-spontaneous at high temperat...

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  19. Assertion (A): There is no reaction known for which DeltaG is positive...

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  20. A reaction which is spontaneous and accompanied by decrease of randomn...

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