Home
Class 11
CHEMISTRY
A sample of CH(4) of 0.08 g was subjecte...

A sample of `CH_(4)` of `0.08 g` was subjected to combustion at `27^(@)C` in a bomb calorimater. The temperature of the calorimeter system was found to be raised by `0.25^(@)C`. IF heat capacity of calorimeter is 18K J, `Delta H` for combustion of `CH_(4)` at `27^(@)C` is

A

`-900` kJ/mole

B

`-905` kJ/mole

C

`-895` kJ/mole

D

`-890` kJ/mole

Text Solution

Verified by Experts

The correct Answer is:
B
`DeltaU=ZxxthetaxxM/W" , "DeltaH=DeltaU+Delta nRT`
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    NARAYNA|Exercise Level -III|64 Videos

  • THERMODYNAMICS

    NARAYNA|Exercise Level-IV|27 Videos

  • THERMODYNAMICS

    NARAYNA|Exercise Level -I (C.W)|62 Videos

  • STRUCTURE OF ATOM

    NARAYNA|Exercise EXERCISE - IV EXEMPLAR PROBLEMS|24 Videos

Similar Questions

Explore conceptually related problems

A sample of 0.16 g CH_(4) was subjected to combustion at 27^(@)C in a bomb calorimeter. The temperature of the calorimeter system (including water) was found to rise by 0.5^(@)C . Calculate the heat of combustion of methane at (a) constant volume and (b) constant pressure. The thermal capacity of calorimeter system is 17.0 kJ K^(-1) and R = 8.314 J K^(-1) mol^(-1) .

0.16 g of methane was subjected to combustion at 27^(@) C in a bomb calorimeter. The temperature of calorimeter system (including water) was found to rise by 0.5^(@) C. Calculate the heat of combustion of methane at (i) constant volume and (ii) constant pressure. The thermal capacity of the calorimeter system is 17.7 kJ K^(-1) .

0.5 g of benzoic acid was subjected to combustion in a bomb calorimeter at 15^(@)C when the temperature of the calorimeter system (including water) was found to rise by 0.55^(@)C . Calculate the heat of combustion of benzoic acid (i) at constant volume and (ii) at constant pressure. the thermal capacity of the calorimeter including water was found to be 23.85 kJ.

One gram sample of NH_(4)NO_(3) is decomposed in a bomb calorimeter. The temperature of the calorimeter increases by 6.23K . The heat capacity of the system is 1.23kJ //g-deg . The molar heat of decomposition for NH_(4)NO_(3) is :

When 1.0 gm of fructose C_(6) H_(12) O_(6) (s) is burnt in oxygen in a bomb calorimeter, the temperature of the calorimeter water increases by 1.56^(@)C . If the heat capacity of the calorimeter and its contents is 10.0 kJ//^(@)C . Calculate the enthalpy of combustion of fructose at 298 K.

NARAYNA-THERMODYNAMICS-Level -II (C.W)
  1. The molar heat capacity of water is

    Text Solution

    |

  2. For a reaction 2A(g)+2B(g) rarr 2C(g)+D(g). If heat of reaction at con...

    Text Solution

    |

  3. A sample of CH(4) of 0.08 g was subjected to combustion at 27^(@)C in ...

    Text Solution

    |

  4. 100 ml of water at 20^(@)C and 100 ml of water at 40^(@)C are mixed in...

    Text Solution

    |

  5. Heat of combustion of benzoic acid (C(6)H(5)COOH) at constant volume a...

    Text Solution

    |

  6. Which of the following is an exothermic reaction?

    Text Solution

    |

  7. Which of the following is an exothermic reaction?

    Text Solution

    |

  8. Determine the heat of transformaiton of C(("dimamond"))rarrC(("graphi...

    Text Solution

    |

  9. H(2)(g)+I(2) (s) rarr 2HI (g), DeltaH=51.9 KJ/mole H(2)(g)+I(2)(g) r...

    Text Solution

    |

  10. The heat of combustion of yellow phoshphorus and red phosphorus are -9...

    Text Solution

    |

  11. The heats of combustion for C, H(2) and CH(4) are -349, -241.8 and -90...

    Text Solution

    |

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

    Text Solution

    |

  13. The heats of xombustion of carbon, hydrogen and ethane are 94, 68.3 an...

    Text Solution

    |

  14. If the heats of formation of C(2)H(2) and C(6)H(6) are 230 kJ mol^(-1)...

    Text Solution

    |

  15. At 298 K, the heats of formation fo C Cl(4) (g), H(2)O(g), CO(2)(g) an...

    Text Solution

    |

  16. The stadard heats of formation of NO(2)(g) and N(2)O(4) (g) are 33.5 a...

    Text Solution

    |

  17. The enthalpies of formation of CO(2(g)), H(2)O((l)) and C(2)H(4(g)) ar...

    Text Solution

    |

  18. If H(2)S+3/2 O(2) rarr H(2)O+SO(2), DeltaH=-136.7 Kcal H(2)+1/2 O(...

    Text Solution

    |

  19. A+3/2 O(2) rarr AO(3) = 3x KJ AO(2)+1/2 O(2) rarr AO(3) = 2y kJ Th...

    Text Solution

    |

  20. The enthalpy change during the formation of 24.95 grams of hydrated co...

    Text Solution

    |