Home
Class 11
CHEMISTRY
For the reaction, 2Cl(g) to Cl2(g), what...

For the reaction, `2Cl(g) to Cl_2(g)`, what are the signs of `DeltaH and DeltaS` ?

Text Solution

AI Generated Solution

To determine the signs of ΔH (enthalpy change) and ΔS (entropy change) for the reaction \(2Cl(g) \rightarrow Cl_2(g)\), we can analyze the process step by step. ### Step 1: Understanding the Reaction The reaction involves two chlorine atoms (Cl) in the gas phase combining to form one molecule of chlorine gas (Cl₂). ### Step 2: Analyzing ΔH (Enthalpy Change) - **Bond Formation**: When two chlorine atoms combine to form a Cl₂ molecule, a bond is formed. The formation of bonds releases energy, which means this process is exothermic. - **Sign of ΔH**: Since the reaction is exothermic, the enthalpy change (ΔH) is negative. ...
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    ICSE|Exercise NUMBERICAL PROBLEMS|18 Videos
  • CHEMICAL BONDING AND MOLECULAR STRUCTURE

    ICSE|Exercise NCERT TEXT-BOOK EXERCISES ( WITH HINTS AND SOLUTIONS)|47 Videos
  • CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

    ICSE|Exercise NCERT TEXT-BOOK. EXERCISE (With Hints and Solutions)|63 Videos

Similar Questions

Explore conceptually related problems

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

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

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

Consider the following spontaneous reaction 3X_(2)(g)rarr2X_(3)(g) . What are the sign of DeltaH , DeltaS and DeltaG for the reaction ?

Considering the reaction, C(s) + O_(2)(g) to CO_(2)(g) + 393.5 kJ the signs of DeltaH, DeltaS and DeltaG respectively are:

In the reactions H_2(g) +Cl_2 ( g) hArr 2HCl (g) .

For the reaction CO_((g))+Cl_(2(g))hArrCOCl_(2(g)) the value of Delta n is equal to :-

For the reaction, 2NOCl(g) hArr 2NO(g)+Cl_(2)(g) Calculate the standard equilibrium constant at 298 K . Given that the value of DeltaH^(ɵ) and DeltaS^(ɵ) of the reaction at 298 K are 77.2 kJ mol^(-1) and 122 J K^(-1) mol^(-1) .

What is K_(p) for the equation 2Cl_((g)) hArr Cl_(2(g)) ? When the system contains equal numberof Cl_((g)) atom and Cl_(2(g)) molecules at 1 bar and 300 k

For the reaction PCl_5

ICSE-CHEMICAL THERMODYNAMICS -NCERT TEXT-BOOK. EXERCISES
  1. The enthalpies of all elements in their standard states are

    Text Solution

    |

  2. DeltaU^@ of combustion of methane is -X kJ mol^(-1). The value of Delt...

    Text Solution

    |

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

    Text Solution

    |

  4. A reaction A + B toC + D + q is found to have a positive entropy chang...

    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 ...

    Text Solution

    |

  7. Calculate the number of kJ of heat necessary to raise the temperature ...

    Text Solution

    |

  8. The enthalpy change on freezing of 1 mol of water at 5^(@)C to ice at ...

    Text Solution

    |

  9. Enthalpy of combustion of carbon to CO2 is -393.5 kJ mol^(-1) Calcu...

    Text Solution

    |

  10. Enthalpies of formation of CO(g).CO(2)(g) and N(2)O(4) are -110,-393,8...

    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 CI(4)(g)rarrC(g)+4C...

    Text Solution

    |

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

    Text Solution

    |

  15. For the reaction at 298 K, 2A + B to C DeltaH=400 KJ mol^(-1) an...

    Text Solution

    |

  16. For the reaction, 2Cl(g) to Cl2(g), what are the signs of DeltaH and D...

    Text Solution

    |

  17. For the reaction 2A(g)+B(g)rarr2D(g) DeltaU^(theta)=-10.55 KJ and ...

    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)/(2)N(2)...

    Text Solution

    |

  20. Calculate the entropy change in surroundings when 1.00 mole of H2O(l) ...

    Text Solution

    |