Home
Class 12
CHEMISTRY
Givecn that : Zn+1//2O(2)rarr ZnO+8400...

Givecn that :
`Zn+1//2O_(2)rarr ZnO+84000` cal ……………1
`Hg+1//2O_(2)rarr HgO+21700` cal …………2
The heat of reaction `(Delta H)` for,
`Zn+HgO rarr ZnO+Hg` is :-

A

105700 cal

B

62300 cal

C

`-105700` cal

D

`-62300` cal

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    ALLEN|Exercise EXERCISE -4|18 Videos

  • THERMODYNAMICS

    ALLEN|Exercise EXERCISE -2|100 Videos

  • TEST PAPERS

    ALLEN|Exercise CHEMISTRY|19 Videos

  • Thermodynamics And Thermo Chemistry

    ALLEN|Exercise All Questions|39 Videos

Similar Questions

Explore conceptually related problems

Given that Zn+1/2 O_(2) rarr ZnO+35.25 kJ . HgO rarr Hg +1/2 O_(2) -9.11 kJ . The heat of the reaction Zn+HgO rarr ZnO +Hg is

The heat of reaction of A+(1)/(2)O_(2)rarr AO is -50 K call and AO+(1)/(2)O_(2)rarr AO_(2) is 100 Kcal. The heat of reaction for A+O_(2)rarr AO_(2) is :-

From the thermochemical reactions, C(graphite) +1//2O_(2)rarr CO , Delta H = -110.5 KJ CO+1//2O_(2)rarr CO_(2),Delta H=-283.2 KJ the heat of reaction of C(graphite) +O_(2)rarr CO_(2) is :

R-N-=C + 2HgO rarr X + Hg_(2)O Identify X in the above reaction

For the reaction, C+O_(2) rarr CO_(2),DeltaH=-393 J 2Zn + O_(2) rarr 2ZnO, H=-412 J

Heat of reaction for, CO(g)+1//2O_(2)(g)rarr CO_(2)(g) at constant V is -67.71 K cal at 17^(@)C . The heat of reaction at constant P at 17^(@)C is :-

R - N overset(rarr)(=) C + HgO rarr X + Hg_(2)O, X is

Find the formula of A ZnS + O_(2) rarr (A) + SO_(2) .

ALLEN-THERMODYNAMICS -EXERCISE -3
  1. Given that , A(s) rarr A(l)DeltaH=x A(l) rarr A(g), DeltaH=y The...

    Text Solution

    |

  2. The enthalpy change of a reaction does not depend on

    Text Solution

    |

  3. From the thermochemical reactions, C(graphite)+1//2O(2)rarr CO , Delta...

    Text Solution

    |

  4. If H(2)+1//2O(2)rarr H(2)O , Delta =-68.39 Kcal K+H(2)O+ "water" rar...

    Text Solution

    |

  5. Given C(s)+O(2)(g)rarr CO(2)(g)+94.2 Kcal H(2)(g)+2O(2)(g)rarr CO(2)...

    Text Solution

    |

  6. From the following data, the heat of formation of Ca(OH)(2)(s) at 18^(...

    Text Solution

    |

  7. If, H(2)(g)+Cl(2)(g)rarr 2HCl(g) , Delta H^(@)=-44 Kcal 2Na(s)+2HCl...

    Text Solution

    |

  8. Given : S((s))+(3)/(2)O(2(g))rarrSO(3(g)+2X Kcal SO(2(s))+(1)/(2)O(2...

    Text Solution

    |

  9. If S +O(2) rarr SO(2), DeltaH =- 298.2 kJ SO(2)+1//2O(2) rarr SO(3),...

    Text Solution

    |

  10. Givecn that : Zn+1//2O(2)rarr ZnO+84000 cal ……………1 Hg+1//2O(2)rarr...

    Text Solution

    |

  11. Given that - 2C(s)+2O(2)(g)rarr 2CO(2)(g) Delta H = -787 KJ H(2)(g...

    Text Solution

    |

  12. Find the heat change in the reaction : NH(3)(g)+HCl(g)rarr NH(4)Cl(s) ...

    Text Solution

    |

  13. The heat of reaction of A+(1)/(2)O(2)rarr AO is -50 K call and AO+...

    Text Solution

    |

  14. C(s)+O(2)(g)rarr CO(2)(g)+94.0 K cal. CO(g)+(1)/(2)O(2)(g)rarr CO(2)...

    Text Solution

    |

  15. Using the following thermochemical data. C(S)+O(2)(g)rarr CO(2)(g), ...

    Text Solution

    |

  16. The enthalpy of vapourisation of liquid water using the data : H(2)(...

    Text Solution

    |

  17. H(2)(g)+1//2O(2)(g)=H(2)O(l) , Delta H(298 K)=-68.32 Kcal. Heat of vap...

    Text Solution

    |

  18. The heat of solution of anhydrous CuSO(4) and CuSO(4).5H(2)O are -15.8...

    Text Solution

    |

  19. One moles of anhydrous AB dissolves in water and liberates 21.0 J mol^...

    Text Solution

    |

  20. Which of the following expression is true :-

    Text Solution

    |