Home
Class 11
CHEMISTRY
The free energy change for the following...

The free energy change for the following reactions are given below
`C_(2)H_(2)(g)+(5)/(2)O_(2)(g)to2CO_(2)(g)+H_(2)O(l)`, `DeltaG^(@)=-1234 kJ`
`C(s)+O_(2)(g)toCO_(2)(g)`, `DeltaG^(@)=-394 kJ`
`H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l)`, `DeltaG^(@)=-237 kJ`
What is the standard free energy change for the reaction
`H_(2)(g)+2C(s)toC_(2)H_(2)(g)` ?

A

`-209` kJ

B

`- 2259` kJ

C

`+ 2259` kJ

D

209 kJ

Text Solution

Verified by Experts

The correct Answer is:
D
At equilibrium `DeltaG=0`.
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

The free energy change for the following reactions are given below C_(2)H_(2)(g)+(5)/(2)O_(2)(g)to2CO_(2)(g)+H_(2)O(l),DeltaG^(@)=-1234kJ C(s)+O_(2)(g)toCO_(2)(g),DeltaG^(@)=-394kJ H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l),DeltaG^(@)=-273kJ What is the standard free energy change for the reaction H_(2)(g)+2C(s)toC_(2)H_(2)(g) :-

From the following data of heats of combustion, find the heat of formation of CH_(3)OH(l) CH_(3)OH(l)+(3)/(2)O_(2)(g)toCO_(2)(g)+2H_(2)O(l),DeltaH=-726kJ C(s)+O_(2)(g)toCO_(2)(g),DeltaH=-394kJ H_(2)(g)+(1)/(2)O_(2)(g)toH_(2)O(l),DeltaH=-286kJ

The following reaction are given : CH_(4(g))+2O_(2(g))toCO_(2(g))+2H_(2)O(g),DeltaH=-x C_((s))+O_(2(g))toCO_(2(g)),2H_(2(g)),DeltaH=-y H_(2(g))+(1)/(2)O_(2(g))toH_(2)O_((g)),2H_(2(g)),DeltaH=-z calculate the heat of formation of CH_(4) ?

ERRORLESS-THERMODYNAMICS AND THERMOCHEMISTRY-NCERT Based Questions (Free Energy and Work Function)
  1. For the reaction, CaCO(3)(s) hArr CaO(s) + CO(2)(g) partial pressure o...

    Text Solution

    |

  2. What is the free energy change (DeltaG) when 1.0 "mole" of water at 10...

    Text Solution

    |

  3. The free energy change for the following reactions are given below C...

    Text Solution

    |

  4. A spontaneous change is one in which a system under goes

    Text Solution

    |

  5. DeltaH and DeltaS for a reaction are +30.558 kJ mol^(-1) and 0.066 kJ ...

    Text Solution

    |

  6. The occurrence of a reaction is impossible if

    Text Solution

    |

  7. When enthalpy and entropy change for a chemical reaction are -2.5 xx10...

    Text Solution

    |

  8. For the reaction at 298K, A((g))+B((g))rarrC((g)) DeltaE=-5 cal and...

    Text Solution

    |

  9. The free energy of formation of NO is 78 kJ mol^(-1) at the temperatur...

    Text Solution

    |

  10. A chemical reaction is spontancous at 298 K but non spontaneous at 350...

    Text Solution

    |

  11. Identify the correct statement from the following in a chemical reacti...

    Text Solution

    |

  12. The standard Gibbs free energy change (DeltaG^(@)) at 25^(@)C for the ...

    Text Solution

    |

  13. For the reaction: X(2)O(4)(l)rarr2XO(2)(g) DeltaU=2.1 cal , DeltaS...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  16. Which of the following statements is true

    Text Solution

    |

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

    Text Solution

    |

  18. A reaction occurs spontaneously if

    Text Solution

    |

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

    Text Solution

    |

  20. Which of the following is not correct

    Text Solution

    |