Home
Class 12
CHEMISTRY
i. H(2)(g) +CI(2)(g)rarr 2HCI(g),DeltaH ...

i. `H_(2)(g) +CI_(2)(g)rarr 2HCI(g),DeltaH =- x kJ`
ii. `NaCI +H_(2)SO_(4) rarr NaHSO_(4) +HCI, DeltaH =- y kJ`
iii. `2H_(2)O +2CI_(2) rarr 4HCI +O_(2),DeltaH =- z kJ`
From the above equations, the value of `DeltaH` of `HCI` is

A

`-x kJ`

B

`-y kJ`

C

`-z kJ`

D

`-x//2 kJ`

Text Solution

Verified by Experts

The correct Answer is:
D
As per definition, the equation `(i)` represents the formation of `2` moles of `HCl`. Hence `DeltaH_(f)` of `HCl(g)=-X//2kJ mol^(-1)`.
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    DINESH PUBLICATION|Exercise Additional Numerical Problems For Practice|16 Videos

  • CHEMISTRY IN EVERY DAY LIFE

    DINESH PUBLICATION|Exercise Unit test-9|50 Videos

Similar Questions

Explore conceptually related problems

H_(2)O(g) rarr H_(2)O(l), DeltaH =- 40.7 kJ DeltaH is the heat of……………….of water.

H_(2)(g)+I_(2) (s) rarr 2HI (g), DeltaH=51.9 KJ/mole H_(2)(g)+I_(2)(g) rarr 2 HI (g), DeltaH=-9.2 kJ/mole. the heat of reaction of I_(2)(s) rarr I_(2) (g)

S( rhombic ) + O_(2) rarr SO_(2)," " DeltaH=-297.5kJ S( monoclini ) + O_(2) rarr SO_(2), " "DeltaH=-300kJ This date indicates :

H_(2)O(l) rarr H_(2)O(s), DeltaH =- 6.01 kJ DeltaH is the heat of ……………….of water.

NH_(4)Cl(s) +H_(2)O rarr NH_(4) Cl (aq) DeltaH=16.3 kJ DeltaH in the above reaction represents

Given that: i. C(s) + O_(2)(g) rarr CO_(2)(g) , DeltaH =- 94.05 kcal ii. H_(2)(g) +(1)/(2) O_(2)(g) rarr H_(2)O(l), DeltaH =- 68.32 kcal iii. C_(2)H_(2)(g) +(5)/(2) O_(2)(g) rarr 2CO_(2)(g) +H_(2)O(l),DeltaH =- 310.62 kcal The heat of formation fo acetylene is

H_(2)O(l) rarr H_(2)O(g), DeltaH = +40.7 kJ DeltaH is the heat of ……………..of water.

H_(2)(g)+(1)/(2)O_(2)(g)rarr2H_(2)O(l), DeltaH =- 286 kJ 2H_(2)(g)+O_(2)(g)rarr2H_(2)O(l)……………kJ(+-?)

DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
  1. Enthalpy of formation of compound is

    Text Solution

    |

  2. The value of DeltaH for the process given below, NH(4)OH(aq)toNH(4)^(+...

    Text Solution

    |

  3. i. H(2)(g) +CI(2)(g)rarr 2HCI(g),DeltaH =- x kJ ii. NaCI +H(2)SO(4) ...

    Text Solution

    |

  4. The reaction SO(2)(g) +1//2O(2)(g) rarr SO(3)(g) should be

    Text Solution

    |

  5. The enthalpy combustion of a substance

    Text Solution

    |

  6. Xg of ethanal was subjected to combustion in a bomb calorimeter and th...

    Text Solution

    |

  7. The enthalpy change for the process C("(graphite)") rarr C((g)), Delta...

    Text Solution

    |

  8. HA+OH^(-) to H(2)O+A^(-)+q(1) kJ H^(+)+OH^(-) to H(2)O+ q(2) kJ Th...

    Text Solution

    |

  9. The heat change accompanying the reaction 2H(2)(g)+O(2)(g) to 2H(2)O...

    Text Solution

    |

  10. When a solid melts there is

    Text Solution

    |

  11. One gram-atom of graphite and one gram-atom of diamond were separately...

    Text Solution

    |

  12. The reaction which shows heat of formation of water correctly is

    Text Solution

    |

  13. Heat of formation, Delta H(f)^(@) of an explosive compound like NCl(3)...

    Text Solution

    |

  14. The products of combustion of an aliphatic thiol (RSH) at 298 K are

    Text Solution

    |

  15. For the transition C("(diamond)") rarr C("(graphite)"), DeltaH=-1.5 kJ...

    Text Solution

    |

  16. Which of the following statements is correct?

    Text Solution

    |

  17. The heat liberated in the following reaction H^(+)(aq)+OH^(-)(aq) to...

    Text Solution

    |

  18. For the neutralisation of 1 mol of H(2)SO(4) with 2 mols of NaOH in d...

    Text Solution

    |

  19. Enthalpy of neutralisation of all strong acids strong bases has the sa...

    Text Solution

    |

  20. A solution of 200 mL of 1 M KOH is added to 200 mL of 1 M HCl and the ...

    Text Solution

    |