Home
Class 12
CHEMISTRY
100 cm^(3) of 0.5N HCI solution at 299.9...

`100 cm^(3)` of `0.5N HCI` solution at `299.95 K` was mixed with `100 cm^(3)` of ` 0.5 N NaOH` solution at `299.75 K` in a thermos flask. The final temperature was found to be `302.65K`. Calculate the enthalpy of neutralisation of `HCI`. Water equivalent of thermos flask is `44 g`.

Text Solution

Verified by Experts

The initial average temperature of the acid and the
`=(299.95+299.75)/(2)=299.85K`
rise in temperature `=(302.65-299.65)=2.80K`
Heat evolved during neutralisation
`=(100+1000+44)xx4.184xx2.8=2858.5J`
`therefore` Enthalpy of neutralisation `=-(2858.5)/(100)xx1000xx(1)/(0.50)`
`=-57.17kJ`
Promotional Banner

Topper's Solved these Questions

  • Chemical Thermodynamics and Thermochemistry

    OP TANDON|Exercise Illustrations of Objective Questions|58 Videos

  • Chemical Thermodynamics and Thermochemistry

    OP TANDON|Exercise Miscellaneous Numerical Examples|22 Videos

  • Chemical Thermodynamics and Thermochemistry

    OP TANDON|Exercise Self Assessment (Integer type).|3 Videos

  • CHEMICAL KINETICS

    OP TANDON|Exercise LINKED COMPRESHENSION TYPE QUESTIONS ( SECTION-VI)|4 Videos

  • CLASSIFICATION AND NOMENCLATURE OF ORGANIC COMPOUNDS

    OP TANDON|Exercise INTEGER|2 Videos

Similar Questions

Explore conceptually related problems

100 cm^(3) of 0.05N 0.5 HCI solution at 299.95 K was mixed with 100 cm^(3) 0.5 N NaOH solution at 299.75 K in a thermos flask. The final temperature was found to be 302.65K . Calculate the enthalpy of neutralisation of HCI . Water equivalent of thermos flask is 44 g .

150 mL of 0.5N nitric acid solution at 25.35^(@)C was mixed with 150 mL of 0.5 N sodium hydroxide solution at the same temperature. The final temperature was recorded to be 28.77^(@)C . Calculate the heat of neutralisation of nitric acid with sodium hydroxide.

100 cm^(3) of 0.1 N HCl is mixed with 100 cm^(3) of 0.2 N NaOH solution. The resulting solution is

20 cm^(3) of xM solution of HCI is exactly neutralised by 40cm^(3) of 0.05 M NaOH solutions, the pH of HCI solution is

What volume of water is to be added to 100 cm^3 of 0.5 M NaOH solution to make it 0.1 M solution ?

150 mL of 0.5N HCl solution at 25^(@)C was mixed with 150 mL of 0.5 N NaOH solution at same temperature. Calculate the heat of neutralization of HCl with NaOH , if find temperature was recorded to be 29^(@)C . (rho_(H_(2)O)=1g//mL)

0.365g of HCl gas was passed through 100 cm^(3) of 0.2 M NaOH solution. The pH of the resulting solution would be

OP TANDON-Chemical Thermodynamics and Thermochemistry-Solved Example
  1. 150 mL of 0.5N nitric acid solution at 25.35^(@)C was mixed with 150 m...

    Text Solution

    |

  2. Whenever an acid is neutralised by a base, the net reaction is H^(o+...

    Text Solution

    |

  3. 100 cm^(3) of 0.5N HCI solution at 299.95 K was mixed with 100 cm^(3) ...

    Text Solution

    |

  4. When a student mixed 50mL of 1M HCI and 150mL of 1M NaOH in a coffee c...

    Text Solution

    |

  5. The enthalpies of neutralisation of a string acid HA and a weaker acid...

    Text Solution

    |

  6. Calculate the standard heat of formation of carbon disulphide (l). Giv...

    Text Solution

    |

  7. Calculate the heat of formation of acetic acid form the following date...

    Text Solution

    |

  8. Given the following standard heats of reactions: (a) heat of formati...

    Text Solution

    |

  9. For the following reaction, C("diamond")+O(2)toCO(2)(g), DeltaH=-94....

    Text Solution

    |

  10. Methanol can be prepared synthetically by heating carbon monoxide and ...

    Text Solution

    |

  11. How much heat will be required to make 2kg of calcium carbide (CaC(2))...

    Text Solution

    |

  12. Calculate DeltaH of the reaction, H-underset(CI)underset(|)overset(H)o...

    Text Solution

    |

  13. Calculate the enthalpy of the following reaction: H(2)C =CH(2)(g) +H...

    Text Solution

    |

  14. The bond dissociation energy of gaseous H(2),Cl(2) and HCl are 104,58 ...

    Text Solution

    |

  15. Calculate the enthalpy of formation of ammonia from the following bond...

    Text Solution

    |

  16. Calculate the resonance enegry of N(2)O form the following data Delt...

    Text Solution

    |

  17. The enthalpies for the following reactions (DeltaH^(Theta)) at 25^(@)C...

    Text Solution

    |

  18. The standard molar enthalpies of formation of cyclohexane (l) and benz...

    Text Solution

    |

  19. Calculate heat of combusion of ethene:

    Text Solution

    |

  20. Using the data (all values are in kilocalorie per mole at 25^(@)C) giv...

    Text Solution

    |