Home
Class 12
CHEMISTRY
DeltaS("surr") " for " H(2) + 1//2O(2) r...

`DeltaS_("surr") " for " H_(2) + 1//2O_(2) rarr H_(2)O, DeltaH -280 kJ` at 400K is

A

700J/g/K

B

700 kJ/mol/K

C

700 J/mol/K

D

0.7 J/mol/K

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise Practice Sheet- Exercise-IV|20 Videos

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise Additional Practice Exercise|54 Videos

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise Practice Sheet- Exercise-II|30 Videos

  • CHEMICAL KINETICS

    AAKASH SERIES|Exercise Objective Exercise - 4 (Assertion (A) & Reason (R) Type Questions)|44 Videos

  • CHEMISTRY IN EVERY DAY LIFE

    AAKASH SERIES|Exercise PRACTICE EXERCISE|29 Videos

Similar Questions

Explore conceptually related problems

If S + O_(2) rarr SO_(2), Delta H = -398.5 kJ SO_(2) + (1)/(2)O_(2) rarr SO_(3), Delta H= -98.7kJ , SO_(3) + H_(2)O rarr H_(2)SO_(4), Delta H= - 130.5kJ H_(2) + (1)/(2) O_(2) rarr H_(2)O, Delta H= -227.3kJ If magnitude of enthalpy of formation of sulphuric acid at 298K is 95x, x= ?

If S + O_(2) rarr SO_(2), DeltaH= -398.2kJ SO_(2) + (1)/(2) O_(2) rarr SO_(3), DeltaH= -98.7kJ , SO_(3) + H_(2)O rarr H_(2)SO_(4), DeltaH= -130.2 kJ H_(2) + (1)/(2) O_(2) rarr H_(2)O, DeltaH= -227.3kJ The enthalpy of formation of sulphuric acid at 298K will be

2C_((s)) + 1/2O_(2(gg) rarr CO_(2(g)) , DeltaH = -787 KJ H_(2(g)) + 1/2O_(2(g)) rarr H_2O_((l)) , DeltaH = -286 KJ C_2H_(2(g)) + 2 1/2O_(2(g)) rarr 2CO_(2(g)) + H_2O_((l)) , DeltaH = -1301 KJ . Heat of formation of acetylene in KJ is

NaOH_((aq)) + HCl_((aq)) rarr NaCl_((aq)) + H_(2)O, Delta H= -13.6 Kcal. H_(2(g)) + (1)/(2) O_(2(g)) rarr H_(2)O , Delta H = - 68 Kcal. What is hat of formation of OH^(-) ?

K_(C) "for " H_(2) + 1//2 O_(2) rArr H_(2) O at 500 K is 2.4 xx 10^(47) . Now backward reaction is fovoured by

K_(C) "for " H_(2) + 1//2 O_(2) rArr H_(2) O at 500 K is 2.4 xx 10^(47) . Now backward reaction is fovoured by

Calculate the heat of formation of KOH from the following data K_((s)) + H_(2)O + aq rarr KOH_((aq)) + (1)/(2) H_(2(g)) , Delta H = -48.4 K.Cal H_(2(g)) + (1)/(2) O_(2(g)) rarr H_(2)O_((l)) , Delta H = -68.44 K.Cal KOH_((s)) + aq rarr KOH_(aq) , DeltaH = -14.01 K.Cal

AAKASH SERIES-CHEMICAL THERMODYNAMICS-Practice Sheet- Exercise-III
  1. Some statements are given with regard to entropy. The incorrect statem...

    Text Solution

    |

  2. 2H(2(g)) + O(2(g)) rarr 2H(2)O((l)) , DeltaH= -ve and DeltaG= -ve. The...

    Text Solution

    |

  3. Based on the third law of themodynamics, the entropy can be obtained u...

    Text Solution

    |

  4. When charcoal burns in air signs of DeltaH and DeltaS "are " 2C((s)) +...

    Text Solution

    |

  5. DeltaS("surr") " for " H(2) + 1//2O(2) rarr H(2)O, DeltaH -280 kJ at 4...

    Text Solution

    |

  6. The direct conversion of A to B is difficult, hence it is carried out ...

    Text Solution

    |

  7. The incorrect statement according to second law of themodynamics is

    Text Solution

    |

  8. Entropy of a system depends upon

    Text Solution

    |

  9. Which processes involve increase in entropy?

    Text Solution

    |

  10. Which statements are correct as per laws of thermodynamics?

    Text Solution

    |

  11. For A rarr B, DeltaH= 3.5 kcal mol^(-1), DeltaS= 10 cal mol^(-1) K^(-1...

    Text Solution

    |

  12. The change in Gibbs free energy of the system along provides a criteri...

    Text Solution

    |

  13. The change in Gibbs free energy of the system along provides a criteri...

    Text Solution

    |

  14. The thermodynamic property that measures the extent of molecular disor...

    Text Solution

    |

  15. The thermodynamic property that measures the extent of molecular disor...

    Text Solution

    |

  16. The thermodynamic property that measures the extent of molecular disor...

    Text Solution

    |

  17. Match the following columns

    Text Solution

    |

  18. Match the following columns

    Text Solution

    |

  19. A quantity of 4.0 moles of an ideal gas at 20^(@)C expands isothermall...

    Text Solution

    |

  20. In how many of the following entropy increases? {:((a) N(2(g)) + 3H(...

    Text Solution

    |