Home
Class 11
CHEMISTRY
For the reaction 2Cl(g) rarr Cl(2)(g),...

For the reaction
`2Cl(g) rarr Cl_(2)(g)`, what are the signs of `DeltaH` and `DeltaS`?

Text Solution

Verified by Experts

The given reaction repesents the formation of bonds. Hence, energy is released , ie.,`DeltaH` is `-ve`. Further, 2 moles of atoms have greater randomness than1 mole of molecules. Hence, randomness decreases, i.e.,`DeltaS` is `-ve`.
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    PRADEEP|Exercise NCERT SUPPLEMENTARY EXERCISE|6 Videos

  • THERMODYNAMICS

    PRADEEP|Exercise NCERT EXEMPLAR PROBLEMS WITH ANSWERS, HINTS AND SOLUTIONS( MULTIPLE CHOICE QUESTIONS-I)|14 Videos

  • THERMODYNAMICS

    PRADEEP|Exercise CONCEPTUAL QUESTIONS( III.Enthalpy change and its relation with internal energy change)|13 Videos

  • STRUCTURE OF ATOM

    PRADEEP|Exercise Competition Focus (JEE (Main and Advanced)/Medical Entrance (IX. Assertion And Reason Type Questions (Type II))|12 Videos

Similar Questions

Explore conceptually related problems

For the reaction 2CI(g) to CI_(2)(g) What are the signs of DeltaH and DeltaS ? what would be the nature of reaction

For the reaction, 2H(g) to H_(2)(g) , what are the signs of DeltaH and DeltaS ?

For the reaction, 2Cl(g) rarr Cl_2(g) , the correct option is:

For the reaction 2H(g)rarr H_(2)(g) , the sign of DeltaH and DeltaS respectively are :

PRADEEP-THERMODYNAMICS-NCERT QUESTIONS AND EXERCISES WITH ANSWERS
  1. The enthalpies of all elements in their standard states are :

    Text Solution

    |

  2. DeltaU^(@) of combustion of methane is -X kJmol^(-1). The value of Del...

    Text Solution

    |

  3. The enthalpy of combustion of methane, graphite and dihydrogen at 298 ...

    Text Solution

    |

  4. A reaction, A+B rarrC + D+ q is found to havea positive entropy change...

    Text Solution

    |

  5. In a process, 701 J of heat is absorbed by a system and 394 J of work ...

    Text Solution

    |

  6. The reaction of cyanamide, NH(2)CN(s), with dioxygen was carried out i...

    Text Solution

    |

  7. Calculate the number of KJ necessary to raise the temperature of 60.0 ...

    Text Solution

    |

  8. Calcualte the enthalpy change on freezing of 1.0 mole of water at 10.0...

    Text Solution

    |

  9. Enthalpy of combustion of carbon to CO(2) is -393.5 kJ mol^(-1). Calcu...

    Text Solution

    |

  10. Enthalpies of formation of CO(g), CO(2)(g),N(2)O(g) and N(2)O(4)(g) ar...

    Text Solution

    |

  11. Given N(2)(g)+3H(2)(g)rarr2NH(3)(g),Delta(r)H^(Ө)= -92.4 kJ mol^(-1...

    Text Solution

    |

  12. Calculate the standard enthalpy of formation of CH(3)OH(l) from the fo...

    Text Solution

    |

  13. Calculate the enthalpy change for the process C Cl(4)(g) rarr C(g)+4...

    Text Solution

    |

  14. For an isolated system, DeltaU = 0 , what will be DeltaS?

    Text Solution

    |

  15. For the reaction at 298 K 2A+B rarr C DeltaH=400 kJ mol^(-1) and D...

    Text Solution

    |

  16. For the reaction 2Cl(g) rarr Cl(2)(g), what are the signs of DeltaH ...

    Text Solution

    |

  17. For the reaction, 2A(g)+B(g) rarr 2D(g) DeltaU^(Θ)=-10.5 kJ and De...

    Text Solution

    |

  18. The equilibrium constant for a reaction is 10. What will be the value ...

    Text Solution

    |

  19. Comment on the thermodynamic stability of NO(g), given 1/2N(2)(g)+1/...

    Text Solution

    |

  20. Calculate the entropy change in surroundings when 1.00 mol of H(2)O(l)...

    Text Solution

    |