Home
Class 12
CHEMISTRY
If H2(g)=2H(g), triangleH=104 cal, then ...

`If H_2(g)=2H(g), triangleH`=104 cal, then heat of atomisation of hydrogen is:

A

52 kcal

B

104 kcal

C

208 kcal

D

Nove of these

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • SURFACE CHEMISTRY

    MBD PUBLICATION|Exercise Question Bank|390 Videos
  • TRANSITION METALS (d-BLOCK ELEMENTS)

    MBD PUBLICATION|Exercise QUESTION BANK|1320 Videos

Similar Questions

Explore conceptually related problems

For H_2(g)+I_2(g)⇌2HI(g) , triangle H=12.4 K cal . The enthalpy of formation of HI is:

If, C(s)+O_2(g)rarrCO_2(g), triangle H=R and CO(g)+1/2O(g)rarrCO_2(g), triangleH=S, then the heat of formation of CO is:

H_2(g)+I_2(g)rarr2HI(g), triangleH=-12.40 kcals , Heat of formation of HI will be

If C(s)+O_2(g)rarrCO_2(g) , triangleH=X and CO(g)+1/2O_2(g)rarrCO_2(g) , triangleH=Y then the heat of formation of CO is

H_2(g)+Cl_2(g)=2HCl(g), triangleH =-44.12 kcal The enthalpy of hydrogen cholride at 298 K is:

Given N_2(g)+3H_2(g)=2NH_3(g), triangleH^@ =-22kcal. The standard enthalpy of formation of NH_3 gas is:

Given , NH_3(g)+3Cl_2(g)⇌NCl_3(g)+3HCl(g), -triangleH_1 N_2(g)+3H_2(g)⇌2NH_3(g), triangleH_2 H_2(g)+Cl_2(g)⇌2HCl(g),+triangleH_3 The heat of formation of NCl_3(g) in the terms of triangleH_1, triangleH_2 and triangle_3 is:

H_2(g)+1/2O_2(g)=H_2O(l) , triangleH_298k =-68.32 kcal. Heat of vaporisation of water at 1 atm and 25^@C is 10.52 kcal. The standard heat of formation(in kcal) of 1 mole of water vapour at 25^@C is:

H_2+1/2O_2rarrH2O , triangle H =-68.39 kcal (i) K+aqrarrKOH(aq)+1/2H_2 , triangleH=-48 kcal (ii) KOH+aqrarrKOH(aq): triangleH=-14 kcal (iii)T he heat of formation(in kcal) of KOH is:

H_2(g)+Cl_2(g)→2HCl(g) , triangleH 298K=-22.06 kcals, For this reaction, △U is equal to:

MBD PUBLICATION-THERMODYNAMICS-Question Bank
  1. Calorific value of carbohydrates is approximately:

    Text Solution

    |

  2. If H^+ +OHrarrH2O+13.7 kcal then the heat of neutralisation for compl...

    Text Solution

    |

  3. If H2(g)=2H(g), triangleH=104 cal, then heat of atomisation of hydroge...

    Text Solution

    |

  4. Given N2(g)+3H2(g)=2NH3(g), triangleH^@=-22kcal. The standard enthalpy...

    Text Solution

    |

  5. triangleH for the reaction, H(g)+H(g)rarrH2(g) will be,

    Text Solution

    |

  6. Which one of the following bonds has the highest average bond energy(k...

    Text Solution

    |

  7. The Kirchhoff's equation given the effect of on heat of reactions:

    Text Solution

    |

  8. Hess's law is used in the determination of:

    Text Solution

    |

  9. When ammonium chloride is dissolved in water, the solution becomes col...

    Text Solution

    |

  10. A cannot engine operates between temperature T and 400 K(T>400K). If e...

    Text Solution

    |

  11. The work done in an open vessel at 300K, when 112 g iron reacts with d...

    Text Solution

    |

  12. 16kg oxygen gas expands at STP to occupy double of its original volume...

    Text Solution

    |

  13. Boiling point of a liquid is 50 K at 1 atm and triangleHvap=460.6 calm...

    Text Solution

    |

  14. For which change triangleHnetriangleU:

    Text Solution

    |

  15. The heat of combustion of ethanol determined by a bomb calorimeter is ...

    Text Solution

    |

  16. A person requires 2870 kcal of energy to lead normal daily life. If he...

    Text Solution

    |

  17. The difference in triangleH and triangleE for the combustion of metha...

    Text Solution

    |

  18. The heat change taking place during the reaction H2O(l)rarrH2O(g) is ?...

    Text Solution

    |

  19. If, C(s)+O2(g)rarrCO2(g), triangle H=R and CO(g)+1/2O(g)rarrCO2(g), tr...

    Text Solution

    |

  20. The enthalpies of formation of N2O and NO are 28 and 90 kJ mol^-1 resp...

    Text Solution

    |