Home
Class 11
CHEMISTRY
If the equilibrium concentration of the ...

If the equilibrium concentration of the components in a reaction
`A+B hArr C+D` are 3,5,10 and 15 mol `L^(-1)` respectively then what is `Delta G^(@)` for the reactiona at 300K ?

A

13.81 cal

B

`- 1381.8` cal

C

`-138.18` cal

D

1391.6 cal

Text Solution

Verified by Experts

The correct Answer is:
B
`Delta G= -2.303 RT log K.`, Here R= 2 cal, T = 300K
`K.= (10 xx 15)/(3 xx 5)= 10, Delta G= -2.303 xx 2 xx 300 xx log_(10) 10`
`= -2.303 xx 2 xx 300 xx 1= -1381.8` cal
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS|Exercise PAST Years Questions|56 Videos

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS|Exercise (Assertion & Reason)|18 Videos

  • THERMODYNAMICS AND THERMOCHEMISTRY

    ERRORLESS|Exercise NCERT Based Questions (Bond Energy)|15 Videos

  • THE S-BLOCK ELEMENTS

    ERRORLESS|Exercise Assertion & Reason|10 Videos

Similar Questions

Explore conceptually related problems

In the reaction PCI_(5)(g)hArr PCI_(3)(g)+CI_(2)(g) the equilibrium concentrations of PCI_(3) and PCI_(3) are 0.4 and 0.2 mol^(-1) , respectively. If the value of K_(c) is 0.5 , what id the concentration of CI_(2) in moles per litre ?

The equilibrium concentration of x, y and z are 4, 2 and 2 mol L^(-1) , respectively, at equilibrium of the reaction 2x+y hArr z . The value of K_(c) is ……………..

For the reaction A hArr B, DeltaE for the reaction is –33.0 kJ mol^(–1) . Calculate equilibrium constant K_C for the reaction at 300 K

For the reaction equilibrium , N_2O_4(g) hArr 2NO_(2)(g) the concentrations of N_2O_4 and NO_2 at equilibrium are 4.8xx10^(-2) and 1.2xx10^(-2) mol L^(-1) respectively.The value of K_C for the reaction is :

In the following equilibrium reaction, 2A hArr B +C the equilibrium concentrations of A, B and C are 1xx10^(-3) M , 2xx10^(-3) M and 3xx10^(-3) M respectively at 300 K. The value of K_c for this equilibrium at the same temperature is

PCI_(5), PCI_(3) and CI_(2) are in equilibrium at 500 K in a closed container and their concentration are 0.8 gt 10^(-3) " mol" L^(-1) " and " 1.2 xx 10^(-3) "mol" L^(-1) " and " 1.2 xx 10^(-3) "mol" L^(-1) respectively. The value of K_(c) for the reaction PCI_(5) (g) hArr PCI_(3) (g) + CI_(2) (g) will be

ERRORLESS-THERMODYNAMICS AND THERMOCHEMISTRY-NCERT Based Questions (Free Energy and Work Function)
  1. For the reaction: X(2)O(4)(l)rarr2XO(2)(g) DeltaU=2.1 cal , DeltaS...

    Text Solution

    |

  2. DeltaG in Ag(2)Oto2Ag+1//2O(2) at a certain temperature is -10kJ"mol"^...

    Text Solution

    |

  3. As O2 (I) is cooled at 1 atm pressure , it freezes to form solid I at ...

    Text Solution

    |

  4. Which of the following statements is true

    Text Solution

    |

  5. The value of Delta H and Delta S for five different reaction are given...

    Text Solution

    |

  6. A reaction occurs spontaneously if

    Text Solution

    |

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

    Text Solution

    |

  8. Which of the following is not correct

    Text Solution

    |

  9. Standard entropy of X(2) , Y(2) and XY(3) are 60, 40 and 50JK^(-1)mol...

    Text Solution

    |

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

    Text Solution

    |

  11. A process is taking place at constant temperature and pressure. Then

    Text Solution

    |

  12. If an endothermic reaction occurs spontaneously at constant temperatur...

    Text Solution

    |

  13. Thermodynamically the most stable form of carbon is

    Text Solution

    |

  14. If the equilibrium concentration of the components in a reaction A+...

    Text Solution

    |

  15. For reversible reaction : X((g))+3Y((g))hArr 2Z((g)), DeltaH=-"40 kJ" ...

    Text Solution

    |

  16. For the reversible reaction : A(s)+B(g)iffC(g)+D(g) : DeltaG^(@)=-3...

    Text Solution

    |

  17. In which of the following reactions,standard reaction entropy change(D...

    Text Solution

    |

  18. Following reaction occurring in an automobile 2C(8)H(18)(g)+25O(2)(g) ...

    Text Solution

    |

  19. The densities of graphite and diamond at 298K are 2.25 and 3.31gcm^(-3...

    Text Solution

    |

  20. The equilibrium constant of a reaction at 298 K is 5 xx 10^(-3) and at...

    Text Solution

    |