Home
Class 12
CHEMISTRY
Heat of formation of H(2)O is -188kJ/mol...

Heat of formation of `H_(2)O` is -188kJ/mol and `H_(2)O_(2)` is -286 kJ/mol. The enthalpy change for the reaction,
`2H_(2)O_(2) to 2H_(2)O+O_(2)`

A

`-196 kJ`

B

`-494 kJ`

C

`146 kJ`

D

`-98 kJ`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NEET MOCK TEST 3

    NTA MOCK TESTS|Exercise CHEMISTRY|45 Videos

  • NEET MOCK TEST 5

    NTA MOCK TESTS|Exercise CHEMISTRY - SINGLE CHOICE|45 Videos

Similar Questions

Explore conceptually related problems

If DeltaH_(f)^(@) for H_(2)O_(2)(l) and H_(2)O(l) are -188kJ and mol^(-1) and -286 kJ mol^(-1) , what will be the enthalpy change of the reaction 2H_(2)O_(2)(l)to2H_(2)O(l)+O_(2)(g) ?

If DeltaH_(f)^(@) for H_(2)O_(2) and H_(2)O are -188 kJ/mole and -286 kJ/mole, what will be the enthalpy change of the reaction

Heat of formation of H_(2)O_((g))" at "25^(@)C is -243 kJ. Delta U for the reaction H_(2(g))+(1)/(2) O_(2(g)) rarr H_(2)O_((g))" at "25^(@)C is

NTA MOCK TESTS-NEET MOCK TEST 4-CHEMISTRY
  1. Zinc and hydrochloric acid react according to the reaction: Zn((s))+...

    Text Solution

    |

  2. In a reaction, Cr(2)O(7)^(2-) is reduced to Cr^(3+). What is concentra...

    Text Solution

    |

  3. A gaseous mixture of 2 moles of A, 3 moles of B, 5 moles of C and 10 m...

    Text Solution

    |

  4. In which of the following options chlorince will acts as the best leav...

    Text Solution

    |

  5. A compound of vanadium chloride has spin only magnetic moment of 1.73 ...

    Text Solution

    |

  6. The following equilibrium constants are given: N(2) + 3H(2) <=> 2NH(...

    Text Solution

    |

  7. Which of the following will not show geometrical isomerism?

    Text Solution

    |

  8. For a reaction in which all reactants and products are liquids, which ...

    Text Solution

    |

  9. The void space in a primitive unit cell is :

    Text Solution

    |

  10. In chelate therapy, lead toxicity is removed by using the ligand

    Text Solution

    |

  11. The oxidation of SO(2) to SO(3) is an exothermic reaction. The yield o...

    Text Solution

    |

  12. When 0.004 M Na(2)SO(4) is an isotonic acid with 0.01 M glucose, the d...

    Text Solution

    |

  13. Which of the following statements regarding nitrogen pentoxide is not ...

    Text Solution

    |

  14. Two different electrolytic cells filled with molten Cu(NO3)(2) and mol...

    Text Solution

    |

  15. Phenyl magnesium bromide reacts with methanol to give :-

    Text Solution

    |

  16. Heat of formation of H(2)O is -188kJ/mol and H(2)O(2) is -286 kJ/mol. ...

    Text Solution

    |

  17. Which of the statement is correct ? I. Melting point of alkane incr...

    Text Solution

    |

  18. The binding energy of an element of 64 MeV. If BE//"nucleon" is 6.4, t...

    Text Solution

    |

  19. Consider the following reaction in aqueous solution 5Br^(-) (aq) + B...

    Text Solution

    |

  20. The rate constant (K') of one reaction is double of the rate constant ...

    Text Solution

    |