Home
Class 12
CHEMISTRY
For a reaction at 25^(@)C enthalpy chang...

For a reaction at `25^(@)C` enthalpy change `(DeltaH)` and entropy change `(DeltaS)` are `-11.7 K J mol^(-1)` and `-105J mol^(-1) K^(-1)`, respectively. Find out whether this reaction is spontaneous or not?

A

Spontaneous

B

Non spontaneous

C

At equilibrium

D

Unpredictable

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS & THERMOCHEMISTRY

    VMC MODULES ENGLISH|Exercise Enable|49 Videos
  • THERMODYNAMICS & THERMOCHEMISTRY

    VMC MODULES ENGLISH|Exercise Efficient|48 Videos
  • THERMODYNAMICS

    VMC MODULES ENGLISH|Exercise JEE ADVANCED (ARCHIVE)|44 Videos

Similar Questions

Explore conceptually related problems

For a reaction at 25^(@)C enthalpy change (DeltaH) and entropy change (DeltsS) are -11.7 K J mol^(-1) and -105J mol^(-1) K^(-1) , respectively. Find out whther this reaction is spontaneous or not?

Enthalpy and entropy changes of reaction are 40.63 kJ mol^(-1) and 108.8 J K^(-1) mol^(-1) , respectively. Predict the feasibility of the reaction at 27^(@)C .

For the reaction, 2NO_(g) + O_(2)(g) rarr 2NO_(2)(g) Calculate DeltaG at 700K when enthalpy and entropy changes are -113.0 kJ mol^(-1) and -145 J K^(-1) mol^(-1) , respectively.

DeltaH and DeltaS for Br_(2)(l) +CI_(2)(g) rarr 2BrCI(g) are 29.00 kJ mol^(-1) and 100.0 J K^(-1) mol^(-1) respectively. Above what temperature will this reaction become spontaneous?

When enthalpy and entropy change for a chemical reaction are -2.5 xx10^(3) cals and 7.4 cals K^(-1) respectively. Predict that reaction at 298 K is

Standard enthalpy and standard entropy changes for the oxidation of ammonia at 298 K are -582.64 kJ mol^(-1) and -150.6 J mol^(-1) k^-1 , respectively. Standard Gibb's energy change for the same reaction at 298 K is

The enthalpy and entropy change for the reaction, Br_2 (I) + CI_2 (g) rightarrow 2BrCl(g) are 7.1 kcal mol^-1 and 25 cal K^-1 mol^-1 respectively. This reaction will be spontaneous at

Zinc reacts with dilute hydrochloric acid to give hydrogen at 17^(@)C . The enthalpy of the reaction is -12.00 kJ mol^(-1) of zinc and entropy change equals 50 J K^(-1) mol^(-1) for the reaction. Calculate the free enegry change and predict whether the reaction is spontaneous or not.

A+BtoC+D DeltaH=-10,000 J mol^(-1) DeltaS-33.3 J mol^(-1)K^(-1) At what temperature the reaction will occur spontaneous from left to right ?

VMC MODULES ENGLISH-THERMODYNAMICS & THERMOCHEMISTRY-Impeccable
  1. For a reaction at 25^(@)C enthalpy change (DeltaH) and entropy change ...

    Text Solution

    |

  2. Calculate the work done when 1 mol of an ideal gas is compressed rever...

    Text Solution

    |

  3. Consider the following reactions: I. C(s) + 1/2 O(2)(g) rarr CO(g),"...

    Text Solution

    |

  4. An endothermic reaction has a positive internal energy change triangle...

    Text Solution

    |

  5. The heat of atomisation of PH3(g) and P2H4(g) are 953 kJ mol^(-1) and ...

    Text Solution

    |

  6. Given that Deltah(f)(H)=218 kJ//mol. Express the H-H bond energy in K ...

    Text Solution

    |

  7. The heat change for the following reaction at 298 K and constant press...

    Text Solution

    |

  8. Entropy changesh for the process, H(2)O(l) to H(2)O at normal pressure...

    Text Solution

    |

  9. A process is called reversible when

    Text Solution

    |

  10. The incorrect statemetns amgong the following is

    Text Solution

    |

  11. Under which of the following sets of conditions, triangleG is always n...

    Text Solution

    |

  12. The second law of thermodynamic states that in a cyclic process,

    Text Solution

    |

  13. When 400 mL of 0.2 N solution ofa weak acid is neutralized by a dilute...

    Text Solution

    |

  14. Equal volumes of molar hydrochloric acid and sulphuric acid are neutra...

    Text Solution

    |

  15. for an endothermic reaction , energy of activation is E(alpha) an...

    Text Solution

    |

  16. Which equation is correct for adiabatic process ?

    Text Solution

    |

  17. For a given reaction, DeltaH = 35.5 kJ mol^(-1) and Delta S = 83.6 JK...

    Text Solution

    |

  18. If W is the amount of work done by the system and q is the amount of h...

    Text Solution

    |

  19. Thermodynamically the most stable form of carbon is (a) diamond , (b...

    Text Solution

    |

  20. If 1 mole of an ideal gas expands isothermally at 37^(@)C from 15 litr...

    Text Solution

    |

  21. The pressure of a gas is 100 k Pa. if it is compressed from 1 m^(3) t...

    Text Solution

    |