Home
Class 12
CHEMISTRY
Change in enthalpy for reaction 2H(2)O(2...

Change in enthalpy for reaction `2H_(2)O_(2)(l)rarr2H_(2)O(l)+O_(2)(g)`
if heat of formation of `H_(2)O_(2)(l)` and `H_(2)O(l)` are `-188` and `-286KJ//mol` respectively is

A

`-196 k J/mol`

B

`+196 k J/mol`

C

`+948 k J/mol`

D

`-948 k J/mol`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    AAKASH INSTITUTE|Exercise ASSIGNMENT (Section -D) Assertion-Reason Type Questions|15 Videos
  • THERMODYNAMICS

    AAKASH INSTITUTE|Exercise ASSIGNMENT (Section - B) Objective Type Questions|35 Videos
  • THE SOLID STATE

    AAKASH INSTITUTE|Exercise Assignment (SECTION - D) (ASSERTION-REASON TYPE QUESTION)|20 Videos

Similar Questions

Explore conceptually related problems

Change in entropy for reaction 2H_(2)O_(2)(l)rarr2H_(2)O(l)+O_(2)(g) if heat of formation of H_(2)O_(2)(l) and H_(2)O(l) are -188 and -286KJ//mol respectively is

The reaction 2H_2O(l)rarr2H_2(g)+O_2(g) is an example of

Calculate the enthalpy of the reaction SnO_(2)(s)+2H_(2)(g)toSn(s)+2H_(2)O(l) given that , bond enthalpies of formation of SnO_(2)(s) and H_(2)O(l) are -580.7 kJ and -285.8kJ respectively.

In the reaction 2H_(2)(g) + O_(2)(g) rarr 2H_(2)O (l), " "Delta H = - xkJ

The heat of formation of H_(2)O_((l)) is -286.2 kJ. The heat of formation of H_(2)O_((g)) is likely to be

Calculate the standard internal energy change for the following reactions at 25^(@)C : 2H_(2)O_(2)(l) rarr 2H_(2)O(l) +O_(2)(g) Delta_(f)H^(Theta) at 25^(@)C for H_(2)O_(2)(l) =- 188 kJ mol^(-1) H_(2)O(l) =- 286 kJ mol^(-1)

AAKASH INSTITUTE-THERMODYNAMICS-ASSIGNMENT (Section - C) Previous Years Questions
  1. Identify the correct statement regarding entropy

    Text Solution

    |

  2. One mole of an ideal gas at 250 K is expanded isothermally from an ini...

    Text Solution

    |

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

    Text Solution

    |

  4. At 37 ^(@)C latent heat of fusion of a compound is 3930 J/mol. Entropy...

    Text Solution

    |

  5. For the reaction C2H(5)OH(l) + 3 O(2)(g) rightarrow 2CO(2)(g) + 3 H(2)...

    Text Solution

    |

  6. Change in enthalpy for reaction 2H(2)O(2)(l)rarr2H(2)O(l)+O(2)(g) if...

    Text Solution

    |

  7. When 1 mol of gas is heated at constant volume temperature is raised f...

    Text Solution

    |

  8. Enthalpy of CH(4) + 1/2 O(2) rightarrow CH(3)OH is negative. If enthal...

    Text Solution

    |

  9. The unit of entropy is

    Text Solution

    |

  10. In a closed insulated container, a liquid is stirred with a paddle to ...

    Text Solution

    |

  11. Two moles of ideal gas at 27^(@)C temperature is expanded reversibly f...

    Text Solution

    |

  12. Heat of combustion DeltaH^(@) for C(s),H(2)(g) and CH(4)(g) are 94, -6...

    Text Solution

    |

  13. For the reaction C(3)H(8)(g) + 5 O2)(g) rightarrow 2CO(2)(g) + 4 H(2...

    Text Solution

    |

  14. What is the entropy change (in JK^(-1) mol^(-1)) when one mole of ice ...

    Text Solution

    |

  15. For which one of the following equations is Delta H(react)^(@)equal to...

    Text Solution

    |

  16. Standard enthalpy and standard entropy changes for the oxidation of am...

    Text Solution

    |

  17. Considering entropy (S) as a thermodynamics parameter, the criterion f...

    Text Solution

    |

  18. The work done during the expansion of a gas from a volume of 4 dm^(3) ...

    Text Solution

    |

  19. The enthalpy of hydrogenation of cyclohexene is -119.5kJ mol^(-1). If ...

    Text Solution

    |

  20. 2Zn + O(2) rightarrow 2ZnO, Delta G^(@) = -616 J 2Zn + S(2) rightarro...

    Text Solution

    |