Home
Class 11
CHEMISTRY
To decompose 9 gm water, requires 142.5 ...

To decompose 9 gm water, requires 142.5 kJ heat the heat of formation of water is

A

`-142.5kJ`

B

`+142.5kJ`

C

`-285kJ`

D

`+285kJ`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • TECHNO INDIA GROUP ACADEMIA,SOUTH KOLKATA QUESTION PAPER

    UNITED BOOK HOUSE|Exercise EXERCISE|73 Videos

  • TIRTHAPATI INSTITUTION QUESTION PAPER

    UNITED BOOK HOUSE|Exercise EXERCISE|31 Videos

Similar Questions

Explore conceptually related problems

In order to decompose 9g water 142.5 kJ heat is required. Hence, the enthalpy of formation of water is

Given that The heat of formation of carbon monoxide will be

169 J energy is required to transform 1g (1cm^(3)) of water into steam at 1 atm pressure. If the latent heat of vaporisation of water is 540 cal cdot g^(-1) , the volume of that steam will be

Heat required to vaporise 1 g of water at 100^(@)C and 1 atm is 2.26 kJ. What is the enthalpy of vaporisation of water at this temperature and pressure?

1 gm of water ( =1 cm^(3)) when boiled at 1 atmosphere pressure, requires 169 J of energy to get converted into steam. Which of the following gives the volume of the converted steam if latent heat of vaporization of water is 540 cal/gm?

The heat of neutralisation of acetic and NaOH is 55.9 kJ. If the heat of neutralisation of all strong acids and strong bases is 57.3 kJ, then calculate the heat of ionisation of acetic acid.

Calculate the free energy change and entropy change per mole when liquid water boils at 1 atmosphere latent heat of vaporization of water= 2.0723KJ mol^(-1)

Amount of heat required to raise the temperature of 1 kg of water by 1^@C is

UNITED BOOK HOUSE-THE SCOTTISH CHURCH COLLEGIATE SCHOOL QUESTION PAPER -EXERCISE
  1. The hybridized state of B in the BF4- is

    Text Solution

    |

  2. Which one represent the proper order of the bond energy of oxygen mole...

    Text Solution

    |

  3. To decompose 9 gm water, requires 142.5 kJ heat the heat of formation ...

    Text Solution

    |

  4. The volume strength of perhydrol is

    Text Solution

    |

  5. What type of bonds are present in B2H6 molecule ?

    Text Solution

    |

  6. Nitrogen of which compound cannot be identified by the help of Lassign...

    Text Solution

    |

  7. The electrophile formed during thesulphonation reaction of benzene is

    Text Solution

    |

  8. What type of compound PAN' is

    Text Solution

    |

  9. Compressibility factor for a real gas at high pressure-

    Text Solution

    |

  10. Which 'd'-orbital does not contain four lobes?

    Text Solution

    |

  11. The value of bond energy of H2, CI2 and HCI are- 104, 58 and 103 Kcal ...

    Text Solution

    |

  12. Why is the spectrum of H^(+) not obtained?

    Text Solution

    |

  13. Which quantum numbers specify the size and the shape of electronic orb...

    Text Solution

    |

  14. Debye is the unit of which quantity what is the relation of it with C...

    Text Solution

    |

  15. Between N(2)O and NO(2) molecules, which one is more polar explain?

    Text Solution

    |

  16. What is inorganic benzene? Why is it called so?

    Text Solution

    |

  17. What is the name of the mixture of 95% oxygen arid 5% carbondioxide? W...

    Text Solution

    |

  18. Which halogen will be present in the halon compound?

    Text Solution

    |

  19. Which reagent is used in Birch reduction ?

    Text Solution

    |

  20. 0.76 gm MgO is obtained from 0.46 gm Mg.Show that these results are in...

    Text Solution

    |