Home
Class 12
CHEMISTRY
Efficiency of fuel is (Delta G= 700.3...

Efficiency of fuel is
`(Delta G= 700.3 kJ mol^(-1) & Delta H=726 kJ mol^(-1))`

A

`66.2 %`

B

`96.7 %`

C

`41.3 %`

D

`85.1 %`

Text Solution

Verified by Experts

The correct Answer is:
B

Efficiency of fuel `=(Delta G)/(Delta H) xx 100`
`=(702.3)/(726) xx 100 = 96.7 % `
Promotional Banner

Topper's Solved these Questions

  • Chemical Thermodynamics & Energetics

    NIKITA PUBLICATION|Exercise QUESTION FROM COMPETITIVE EXAM|35 Videos
  • CHEMICAL KINETICS

    NIKITA PUBLICATION|Exercise MCQs|351 Videos
  • CHEMISTRY IN EVERYDAY LIFE

    NIKITA PUBLICATION|Exercise MCQs|224 Videos

Similar Questions

Explore conceptually related problems

For a given reaction, Delta H = 35.5 kJ mol^(-1) and Delta S = 83.6 JK^(-1) mol(-1) . The reaction is spontaneous at : (Assume that Delta H and Delta S do not vary with temperature)

Following are the values of E_(a) and Delta H for three reactions carried out at the same temperature : I: E_(a) =20 kJ mol^(-1), Delta H =-60 kJ mol^(-1) II: E_(a) =10 kJ mol^(-1), Delta H =-20 kJ mol^(-1) III: E_(a) =40 kJ mol^(-1), Delta H=+15 kJ mol^(-1) If all the three reaction have same frequency factor then fastest and slowest reactions are :

For the reaction 2NO_2 (g) hArr N_2O_4(g) , when DeltaS = - 176.0 J K^(-1)mol^(-1) and DeltaH = - 57. 8 kJ mol^(-1) , the magnitude of Delta G at 298 K for the reaction is __________ kJ mol^(-1) . (Nearest integer)

Calculate the temperature at which liquid water will be in equilibrium with water vapour. Delta_(vap)H = 40.00 kJ mol^(-1) and Delta_(vap)S = 0.100 kJ mol^(-1)K^(-1)

Delta_(f) H of graphite is 0.23 kJ mol^(-1) and Delta_(f) H of diamond is 1.896 kh mol^(-1) . Delta H_(transition) from graphite to diamond is

NIKITA PUBLICATION-Chemical Thermodynamics & Energetics-QUESTION FROM COMPETITIVE EXAM
  1. Efficiency of fuel is (Delta G= 700.3 kJ mol^(-1) & Delta H=726 kJ ...

    Text Solution

    |

  2. For an endothermic reaction where DeltaH represent the enthalpy of rea...

    Text Solution

    |

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

    Text Solution

    |

  4. Match List I (Equations) with List II (Type of processes) and select t...

    Text Solution

    |

  5. Three moles of an ideal gas expanded spontaneously into vacuum. The wo...

    Text Solution

    |

  6. For vaporization of water at 1 atmospheric pressure the values of Delt...

    Text Solution

    |

  7. The following two reactionas are known FeO(3)(s)+3CO(g)rarr2Fe(s)+CO...

    Text Solution

    |

  8. If the enthaply change for the transition of liquid water to steam is...

    Text Solution

    |

  9. Enthalpy change for the reaction, 4H((g))rarr 2H(2(g)) is -869.6 kJ ...

    Text Solution

    |

  10. Consider the following processes :- {:(,DeltaH(kJ//mol)),((1)/(2)A r...

    Text Solution

    |

  11. In view of the signs of Delta(r)G^(0) for the following reactions Pb...

    Text Solution

    |

  12. The value of enthalpy change (DeltaH) for the reaction C(2)H(5)OH (l...

    Text Solution

    |

  13. Consider the reaction, 4NO(2)(g)+O(2)(g)rarr2N(2)O(5)(g),Delta(r )H=...

    Text Solution

    |

  14. Match the transformation in colums I with appropriate options in colum...

    Text Solution

    |

  15. The entropy change involved in the isothermal reversible expansion of ...

    Text Solution

    |

  16. Which of the following is correct option for the free expansion of an ...

    Text Solution

    |

  17. The Gibbs energy for the decomposition of Al(2)O(3) at 500^(@)C is as...

    Text Solution

    |

  18. The entropy change involved in the isothermal reversible expansion of ...

    Text Solution

    |

  19. The incorrect expression among the following is

    Text Solution

    |

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

    Text Solution

    |

  21. The enthalpy of fusion of water is 1.435 kcal//"mole". The molar entro...

    Text Solution

    |