Home
Class 11
CHEMISTRY
For N(2) + 3H(2) rarr 2NH(3), enthalpy a...

For `N_(2) + 3H_(2) rarr 2NH_(3)`, enthalpy and internal energy changes respectively are, `Delta H " & " Delta U` then

A

`Delta H- 0`

B

`Delta H ne Delta U`

C

`Delta H lt DeltaU`

D

`Delta H gt Delta U`

Text Solution

Verified by Experts

The correct Answer is:
C
`Delta H = Delta E + Delta ng RT, Delta n_(g) lt 0 rArr Delta H lt Delta U`
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE- II) (LEVEL- II (ADVANCED) STRAIGHT OBJECTIVE TYPE QUESTIONS)|4 Videos

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE- II) (LEVEL- II (ADVANCED) MORE THAN ONCE CORRECT ANSWER TYPE QUESTIONS)|6 Videos

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE- I) (LEVEL- II (ADVANCED) INTEGER TYPE QUESTIONS)|5 Videos

  • CHEMICAL THERMODYANMICS

    AAKASH SERIES|Exercise Questions For Descriptive Answers|28 Videos

  • ELECTRON MIGRATION EFFECTS

    AAKASH SERIES|Exercise QUESTIONS FOR DESCRIPTIVE ANSWERS|10 Videos

Similar Questions

Explore conceptually related problems

Chemical reactions are invariably associated with the transfer of energy either in the form of hear or light. In the laboratory, heat changes in physical and chemical processes are measured with an instrument called calorimeter. Heat change in the process is calculated as: q= ms Delta T , s= Specific heat = c Delta T = Heat capacity. Heat of reaction at constant pressure is measured using simple or water calorimeter. Q_(v)= Delta U = Internal energy change, Q_(P) = DeltaH, Q_(P) = Q_(V) + P Delta V and DeltaH = Delta U+ Delta nRT . The amount of energy released during a chemical change depends on the physical state of reactants and products, the condition of pressure, temperature and volume at which the reaction is carried out. The variation of heat of reaction with temperature and pressure is given by Kirchoff's equation: (DeltaH_(2) - DeltaH_(1))/(T_(2)-T_(1))= Delta C_(P) (At constant pressure), (DeltaU_(2) - DeltaU_(1))/(T_(2)-T_(1)) = DeltaC_(V) (At constant volume) The enthalpy change (DeltaH) for the reaction N_(2) (g) + 3H_(2)(g) rarr 2NH_(3)(g) is -92.38kJ at 298 K. The internal energy change DeltaU at 298 K is

N_(2) + 3H_(2) rarr 2NH_(3), Delta H = - 46K . Cals. From the above reaction, heat of formation of ammonia is

For the reaction, N_(2) + 3H_2 rarr 2NH_(3) if E_1and E_2 equivalent masses of NH_3 and N_2 respectively then E_1 -E_2 is

For N_(2) + 3 H_(2) hArr 2 NH_(3) , continous removal of NH_(3) maintains the following condition

For N_(2)+3H_(2)to2NH_(3) rates of disappearance of N_(2) and H_(2) and rate of appearance of NH_(3) respectively, are a,b and c then

(A) : For N_(2) + 3H_(2) hArr 2NH_(3). Delta H =-Q KJ, high pressure yiclds more Ammonia (R) According to Lechatlier's principle, increase of pressure shifts equilibrium in a direction that proceeds in decrease in number of moles.

One mole of a non-ideal gas undergoes a change of state (2.0 atm, 3.0 L, 90K) rarr (4.0 atm, 5.0 L, 245 K) with a change in internal energy, Delta U = 30.0 L atm . The change in enthalpy (Delta H) of the process in L atm is (Give your answer after dividing with 11)

AAKASH SERIES-CHEMICAL THERMODYNAMICS-PRACTICE SHEET (EXERCISE- II) (LEVEL- I (MAIN) STRAIGHT OBJECTIVE TYPE QUESTIONS)
  1. When a solid melts there is

    Text Solution

    |

  2. For N(2) + 3H(2) rarr 2NH(3), enthalpy and internal energy changes res...

    Text Solution

    |

  3. For which of the following reaction Delta H = Delta E + 2RT

    Text Solution

    |

  4. Which of the indicated relationship is correct for the following exoth...

    Text Solution

    |

  5. For which of the following elements, the standard enthalpy is not zero...

    Text Solution

    |

  6. Which are of the following is an exothermic reaction?

    Text Solution

    |

  7. (A) : The reaction C + O(2) rarr CO(2) is an exothermic reaction Rea...

    Text Solution

    |

  8. For the transition C(("diamonid")) rarr C(("graphite")) , Delta H = -1...

    Text Solution

    |

  9. Which of the following equation represents standard heat of formation ...

    Text Solution

    |

  10. Which of the following is not a combustion reaction

    Text Solution

    |

  11. The chemical process involved in the combustion reactions is

    Text Solution

    |

  12. MgSO(4(s)) + H(2)O rarr MgSO(4(aq)), Delta H = - 84K. Cals, Delta H of...

    Text Solution

    |

  13. The heat change for the following reaction C((s)) + 2S((s)) rarr CS(2(...

    Text Solution

    |

  14. N(2) + 3H(2) rarr 2NH(3), Delta H = - 46K. Cals. From the above reacti...

    Text Solution

    |

  15. The enthalpies of HCl, NaOH ,NaCl and H(2)O are -120, -82, -148 and -6...

    Text Solution

    |

  16. How much energy is released when 6 mole of octane is burnt in air? Giv...

    Text Solution

    |

  17. What is theheat of formation of C(6)H(6), given that the heats of comb...

    Text Solution

    |

  18. Heat of combustion of C(2)H(4) is -337 kCal. If 5.6 lit O(2) is used a...

    Text Solution

    |

  19. For the following reaction H((aq))^(+) + OH((aq))^(-) rarr H(2)O((l)) ...

    Text Solution

    |

  20. For the reaction 2H(2)O((l)) rarr H(3)O((aq))^(+) + OH((aq))^(-), the ...

    Text Solution

    |