Home
Class 11
CHEMISTRY
If S(g)+e^(-) rarr S^(1-)(g), Delta H = ...

If `S(g)+e^(-) rarr S^(1-)(g), Delta H = -207.6 KJ`
`S(g) + 2e^(-) rarr S^(2-)(g), Delta H = +335.2 KJ`.
The enthalpy for the reaction
`S^(1-)(g)+e^(-) rarr S^(2-)(g)`:

A

`+127.6 KJ`

B

`-127.6 KJ`

C

`+542.8 KJ`

D

`-641.8 KJ`

Text Solution

Verified by Experts

The correct Answer is:
C

`Delta H = H_(P-H_(R))`
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    NARAYNA|Exercise Level-II (H.W)|24 Videos
  • THERMODYNAMICS

    NARAYNA|Exercise Level -V|106 Videos
  • THERMODYNAMICS

    NARAYNA|Exercise Level-IV|27 Videos
  • STRUCTURE OF ATOM

    NARAYNA|Exercise EXERCISE - IV EXEMPLAR PROBLEMS|24 Videos

Similar Questions

Explore conceptually related problems

If 2AI(s) +1(1)/(2) O_(2)(g) rarr AI_(2)O_(3)(s), DeltaH =- 1667.8 kJ H_(2)(g) +(1)/(2)O_(2)(g) rarr H_(2)O(l), DeltaH =- 285.9 kJ Calculate DeltaH for the reaction AI_(2)O_(3)(s) rarr 2AI(s) +1(1)/(2)O_(2)(g)

S_R + O_2(g) rarr SO_2(g), Delta H =-71.1 kcal m S_M + O_2(g) rarr SO_2(g), Delta H =-71.7 kcal Thus Delta H for the consversion of S_R rarr S_M is

For the system S (s) + O_(2)(g) rarr SO_(2)(g) ?

H_(2)(g)+I_(2) (s) rarr 2HI (g), DeltaH=51.9 KJ/mole H_(2)(g)+I_(2)(g) rarr 2 HI (g), DeltaH=-9.2 kJ/mole. the heat of reaction of I_(2)(s) rarr I_(2) (g)

Using the following thermochemical equations : S("rhombic") + 3/2 O_(2)(g) rarr SO_(3)(g), " "Delta H = - 2x kJ mol^(-1) II. SO_(2)(g) + 1/2 O_(2)(g) rarr SO_(3)(g), " "Delta H = -Y kJ mol^(-1) Find out the heat of formation of SO_(2)(g) in kJ mol^(-1) .

Delta S for the reaction , MgCO_(3)(s)rarr MgO(s)+CO_(2)(g) will be :

The following teo reaction are known : Fe_(2)O_(3)(s)+3CO(g)rarr2Fe(s)+3CO_(2)(g) , Delta H= -26.8 kJ FeO(s)+CO(g)rarr Fe(s)+CO_(2)(g) , Delta H = - 16.5 kJ Correct target equation is Fe_(2)O_(3)(s)+CO(g)rarr 2FeO(s)+CO_(2)(g), Delta H = ?

NARAYNA-THERMODYNAMICS-Level -I (H.W)
  1. Which of the following is an exothermic reaction?

    Text Solution

    |

  2. The heats evolved in combustion of rhombic and monoclinic sulphur are,...

    Text Solution

    |

  3. Conversion of sulphur to SO(3) has Delta H = -2x Kcal and conversion o...

    Text Solution

    |

  4. In which of the following reactions, heat liberated is known as standa...

    Text Solution

    |

  5. In which of the following reaction does the heat change represent the ...

    Text Solution

    |

  6. For the reaction 3N(2)O((g))+2NH(3(g)) rarr 4N(2(g))+3H(2)O((g))Delt...

    Text Solution

    |

  7. In order to decompose 9 grams of water 142.5 KJ heat is required. Henc...

    Text Solution

    |

  8. The standard heat of formation of carbon disulphide (l) given that sta...

    Text Solution

    |

  9. H(2)(g) + Cl(2) rarr 2HCl (g), Delta H = -44K.cals 2 Na(s)+2HCl (g)rar...

    Text Solution

    |

  10. If S(g)+e^(-) rarr S^(1-)(g), Delta H = -207.6 KJ S(g) + 2e^(-) rarr...

    Text Solution

    |

  11. 1 gram graphite on combustion in oxygen liberates 7.82 K.cal of heat. ...

    Text Solution

    |

  12. Lattice energy of NaCl((s)) is -788kJ mol^(-1) and enthalpy of hydrati...

    Text Solution

    |

  13. Enthalpy of vapourisation for water is 186.5 KJ "mole"^(-1). The entro...

    Text Solution

    |

  14. S(H(2(g)))^(0) = 130.6 J K^(-1) mol^(-1), S(H(2)O((l)))^(0)= 69.9 J K^...

    Text Solution

    |

  15. Melting & boiling point of NaCl respectively are 1080 K & 1600 K. Delt...

    Text Solution

    |

  16. DeltaS(sur) for H(2)+1//2O(2) rarr H(2)O, Delta H = -280 KJ at 400 K i...

    Text Solution

    |

  17. The change in entropy, Delta S is positive for an endothermic reaction...

    Text Solution

    |

  18. Standard enthalpy and standard entropy change for the oxidation of NH(...

    Text Solution

    |

  19. The DeltaG in the process of melting of ice at -15^@C is :

    Text Solution

    |

  20. For a certain A(g)to B(g) at equillibrium . The parital pressure of B ...

    Text Solution

    |