Home
Class 12
CHEMISTRY
For the reaction 2Cl(g)toCl(2)(g), what ...

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

Text Solution

Verified by Experts

The process involves formation of a bond, which is always exothermic. Hence, `DeltaH lt0` for this process. The no. of gaseous particles decreases in the process. Consequently, randomness of the system decreases. Hence, `DeltaS lt0` for this process.
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise HIGHER ORDER THINKING SKILLS (HOTS) QUESTIONS|20 Videos

  • CHEMICAL THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise ENTRANCE QUESTION BANK|53 Videos

  • CHEMICAL THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise SOLVED WBCHSE SCANNER|46 Videos

  • CHEMICAL KINETICS

    CHHAYA PUBLICATION|Exercise EXERCISE (NUMERICAL PROBLEMS)|37 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    CHHAYA PUBLICATION|Exercise PRACTICE SET 15|15 Videos

Similar Questions

Explore conceptually related problems

for the reaction 2Cl(g)rarr Cl_2(g) What are the signs of Delta H and Delta S ?

In the reaction, H_2(g) + Cl_2(g) iff 2HCl(g)

Following two reactions occur spontaneously. What will be the signs of DeltaS_(sys) and DeltaS_("surr") in these two reactions? (i) A(s)toB(s)+C(g),DeltaH gt0 (ii) 2X(g)toX_(2)(g),Delta H lt 0 .

Calculate the DeltaG^0 for the reaction N_2(g) + O_2(g) * 2NO(g) Given DeltaH^0 =180.5 K.J , and DeltaS^0 = 15 J at 25^@C .

For the reaction N_(2)(g)+3H_(2)(g)to2NH_(3)(g),DeltaH and DeltaS are -95.4kJa nd -198.3J*K^(-1) respectively. Assuming reaction be spontaneous at 500K ? Explain.

Values of Delta H Delta S for the given reaction are -95.4 kJ and -198.3 J*K^(-1) respectively: N_(2)(g)+3H_(2)(g) to 2NH_(3)(g) State whether the reaction will be spontaneous at 500 K or not. Consider Delta H and DeltaS are independent of temperature.

The boiling point of benzene is 80.1^(@)C . At ordinary pressure and 70^(@)C , the benzene vapour spontaneously transforms into liquid benzene. In this process, what will the signs of DeltaH,DeltaS and Delta G be?

CHHAYA PUBLICATION-CHEMICAL THERMODYNAMICS-SOLVED NCERT EXERCISE
  1. Enthalpies of all elements in standard states are-

    Text Solution

    |

  2. DeltaU^(0) for combustion of methane is -XkJ*mol^(-1). The value of De...

    Text Solution

    |

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

    Text Solution

    |

  4. A reaction, A+B to C+D+q is found to have a positive entropy change. T...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  7. Calculate the number of kJ necessary to raise the temperature of 60g o...

    Text Solution

    |

  8. Calculate the enthalpy change on freezing of 1.0 mole of water at 10^@...

    Text Solution

    |

  9. Enthalpy of combustion of C to CO(2): -393.5kJ*mol^(-1). Calculate the...

    Text Solution

    |

  10. Enthalpies of formation of CO(g),CO2(g),N2O(g) and N2O4(g) are -110,-3...

    Text Solution

    |

  11. N(2)(g)+3H(2)(g)to2NH(3)(g),Delta(r)H^(0)=-92.4kJ*mol^(-1) What is t...

    Text Solution

    |

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

    Text Solution

    |

  13. Calculate the enthaply change for the process : C Cl4(g) to C(g)+4Cl...

    Text Solution

    |

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

    Text Solution

    |

  15. For the reaction, 2A+B to C,DeltaH=400kJ*mol^(-1) & DeltaS=0.2kJ*K^(-1...

    Text Solution

    |

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

    Text Solution

    |

  17. For the reaction , 2A(g)+B(g) to 2D(g),DeltaU^(0)=-10.5kJ and DeltaS^(...

    Text Solution

    |

  18. Equilibrium consistant for a reaction is 10. find the value of DeltaG^...

    Text Solution

    |

  19. Comment on the thermodynamic stability of NO(g). Given: (1)/(2)N(2)(...

    Text Solution

    |

  20. Calculate the entropy change in the surrounding when 1,00 mol of H(2)O...

    Text Solution

    |