Home
Class 12
CHEMISTRY
For the auto-ionization of water at 25^(...

For the auto-ionization of water at `25^(@)C, H_(2)O(l)iff H^(+)(aq)+OH^(-)` (aq) equilibrium constant is `10^(-14)`.
What is `DeltaG^(@)` for the process?

A

`8 xx 10^(4)` J

B

`3.5 xx 10^(4)`J

C

`10^(4)` J

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
Using `-Delta_(r)G^(@) =RT lnl K_(eq) rArr -Delta_(r)G^(@) = 8.314 xx 298 ln 10^(-14) = 7.99 xx 10^(4)` J
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    VMC MODULES ENGLISH|Exercise LEVEL-2 (NUMERICAL VALUE TYPE)|15 Videos

  • THERMODYNAMICS

    VMC MODULES ENGLISH|Exercise JEE (MAIN ARCHIVE)|32 Videos

  • THERMODYNAMICS

    VMC MODULES ENGLISH|Exercise LEVEL-1|75 Videos

  • THERMOCHEMISTRY

    VMC MODULES ENGLISH|Exercise JEE ADVANCED (ARCHIVE)|31 Videos

  • THERMODYNAMICS & THERMOCHEMISTRY

    VMC MODULES ENGLISH|Exercise Impeccable|48 Videos

Similar Questions

Explore conceptually related problems

To calculate K_(W) of water H_(2)O(l)+H_(2)O_(l)toH_(2)O^(+)(aq)+OH^(-)(aq)

The equilibrium constant for the ionization of RNH_(2) (g) in water as RNH_(2)(g)+H_(2)O(l)hArrRNH_(3)^(+)(aq)+OH^(-)(aq) is 8xx10^(-6) at 25^(@)C. find the pH of a solution at equilibrium when pressure of RNH_(2) (g) is 0.5 bar :

Ammonia is a weak base that reacts with water according to the equation NH_(3)(aq)+H_(2)O(l)hArrNH_(4)^(+)(aq)+OH^(-)(aq) Select the correct option (s) that can increase the moles of ammonium ion in water:

The heat liberated in the following reaction H^(+)(aq)+OH^(-)(aq) to H_(2)O(l) is

For the following reaction: K=1.7xx10^(7) at 25^(@)C Ag^(o+)(aq)+2NH_(3)(aq) hArr [Ag(NH_(3))_(2)]^(o+) What is the value of DeltaG^(ɵ) in kJ ?

E_"cell"^@ for the reaction , 2H_2O to H_3O^(+) + OH^(-) at 25^@C is -0.8277 V. The equilibrium constant for the reaction is

What is the reaction given below, called ? H_(2)O_((l)) + H_(2)O_((l)) hArr H_(3)O_((aq))^(+) + OH_((aq))^(-)

If the equilibrium constant of BOH harr B^(o+) +overset(Theta)OH at 25^(@)C is 2.5 xx 10^(-6) , then equilibrium constant for BOH +H^(o+) hArr B^(o+)+H_(2)O at the same temperature is

If equilibrium constant of HA+H_(2)O hArr A^(-) +H_(3)O^(+) at 25^(@)C is 2.82 xx10^(-5) , then the equilibrium constant for HA + OH^(-) hArr A^(-) +H_(2)O at the same temperature is

If the equilibrium constant for the reaction H^+(aq)+OH^-)(aq)iffH_2O(l) is 10^13 at certain temperature then what is the E^(@) for the reaction, 2H_2O(l)+2e^-)iffH_2(g)+2OH^(-)(aq) (a)-0.858V (b)0.547V (c)4.37V (d)1.09V

VMC MODULES ENGLISH-THERMODYNAMICS-LEVEL-2
  1. Which of the following is (are) correct?

    Text Solution

    |

  2. When ice melts at 1^(@)C :

    Text Solution

    |

  3. The standard enthalpy of formation of gaseous H(2)O at 298 K is -241.8...

    Text Solution

    |

  4. Which statements in each of the following paris would you except to ha...

    Text Solution

    |

  5. DeltaH for solid to liquid transitions for protein A and B are 2.73 kc...

    Text Solution

    |

  6. For the auto-ionization of water at 25^(@)C, H(2)O(l)iff H^(+)(aq)+OH^...

    Text Solution

    |

  7. For a particular reversible reaction at temperature T, DeltaH and Delt...

    Text Solution

    |

  8. Which of the following reactions defines DeltaH(f)^(@) ?

    Text Solution

    |

  9. The direct conversion of A or B is difficult, hence it is carried out ...

    Text Solution

    |

  10. A schematic plot of ln K(eq) versus inverse of temperature for a react...

    Text Solution

    |

  11. An endotthermic reaction is non-spontaneous at freezing point of water...

    Text Solution

    |

  12. Select the correct statement(s) about entropy S

    Text Solution

    |

  13. A particular reaction at 27^(@)C for which Delta H gt 0 and Delta S gt...

    Text Solution

    |

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

    Text Solution

    |

  15. Standard entropies of X(2), Y(2) and XY(3) are 60, 40 and 50 JK^(–1) m...

    Text Solution

    |

  16. The incorrect expression among the following is

    Text Solution

    |

  17. A reaction has DeltaH=-33kJ and DeltaS=-58J//K. This reaction would be...

    Text Solution

    |

  18. Animals operate under conditons of constant pressure and most of the p...

    Text Solution

    |

  19. 10 g of argon is compressed isothermally and reversibly at a temperatu...

    Text Solution

    |

  20. 4x^2-9=(px+t)(px-t) In the equation above, p and t are constants. Wh...

    Text Solution

    |