Home
Class 11
CHEMISTRY
Calculate Delta(r)G^(@) for (NH(4)Cl,s) ...

Calculate `Delta_(r)G^(@)` for `(NH_(4)Cl,s)` at 310K.
Given :`Delta_(r)H^(@)(NH_(4)Cl,s)` =-314 kj/mol,`Delta_(r)C_(p)=0`
`S_(N_(2)(g))^(@)=192 JK^(-1mol^(-1)),S_(H_(2)(g))^(@)=130.5JK^(-1)mol^(-1),`
`S_(Cl_(2)(g))^(@)=233JK mol^(-1), S_(NH_(4)Cl(s))^(@)=99.5JK^(-1)mol^(-1)`
All given data at 300K

A

`-198.56kJ//mol`

B

`-426.7KJ//mol`

C

`-202.3KJ//mol`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
a
Promotional Banner

Topper's Solved these Questions

  • SALT ANALYSIS

    GRB PUBLICATION|Exercise Subjective Type|69 Videos

Similar Questions

Explore conceptually related problems

Calcualate Delta_(f)G^(@) "for" (NH_(4)Cl,s) at 310 K. Given : Delta_(f)H^(@)(NH_(4)Cl,s)=-314.5 KJ//"mol," "Delta_(r)C_(p)=0 S_(N_(2)(g))^(@)=192 JK^(-1), " "S_(H_(2)(g))^(@)=130.5 JK^(-1)mol^(-1), S_(Cl_(2))^(@)(g) =233 JK^(-1)"mol"^(-1)," "S^(@)NH_(4)Cl(s)=99.5 JK_(1)"mol"^(-1) All given data are at 300K.

Calculate the magnitude of standard free energy of formation of ammonium chloride at 25^(@)C (approximate integer in Kcal mol^(-1) ), the equation showing the formation of NH_(4)CI from its elements is 1/2NH_(4)(g) + 2H_(2)(g) + 1/2CI_(2)(g) rarr NH_(4)CI(s) For NH_(4)CI, DeltaH_(f)^(@) is -313 KJ mol^(01) , Also given that " "S_(N_(2))^(@) = 191.5 JK^(-1) mol^(-1)" "S_(N_(2))^(@) = 130.6 JK^(-1) mol^(-1) " "S_(CI_(2))^(@) = 223.0 JK^(-1) mol^(-1) " "S_(NH_(4)CI)^(@) = 94.6 JK^(-1)mol^(-1)

The approx value of K for a reaction AhArrB is : Given Delta_(r)H_(298K)^(@)=-54.07KJmol^(-1) , Delta_(r)S_(298K)^(@)=10Jk^(-1)mol^(-1) and R=8.314JK^(-1)mol^(-1) .

The value of log_(10)K for a reaction A hArr B is (Given: Delta_(f)H_(298K)^(Theta) =- 54.07 kJ mol^(-1) , Delta_(r)S_(298K)^(Theta) =10 JK^(=1) mol^(-1) , and R = 8.314 J K^(-1) mol^(-1)

The value of 1og_(10) K for a reaction AhArrB is: (Given, Delta_(r)H_(298K)^(@)=-54.07kJ" "mol^(-1),Delta_(r)S_(298K)^(@)=10JK^(-1)" "mol^(-1) and R=8.314JK^(-1)" "mol^(-1),2.303xx8.314xx298=5705 )

Tin is obtained from cassiterite by reduction with coke. Use the data given below to determine the minimum temperature (in K) at which the reduction of cassiterite by coke would take place . at 298 K : Delta_fH^0(SnSO_2(s))=-5.81"KJ mol"^(-1), Delta_fH^0(CO_2(g))=-394.0"kJ mol"^(-1) , S^0(SnO_2(s))=56.0JK^(-1)" mol"^(-1), S^0(Sn(s))=52.0J K^(-1)mol^(-1) s^0(C(s))=6.0JK^(-1)mol^(-1), S^0(CO_2(g))=210.0JK^(-1)mol^(-1) Assume that the enthalpies and the entropies are temperature independent.

GRB PUBLICATION-THERMODYNAMICS-All Questions
  1. If the enthalpy of formation and enthalpy of solution of HCl (g) are-9...

    Text Solution

    |

  2. The enthalpy of neutraliztion of weak base A OH and a strong base BOH ...

    Text Solution

    |

  3. Calculate Delta(r)G^(@) for (NH(4)Cl,s) at 310K. Given :Delta(r)H^(@...

    Text Solution

    |

  4. The molar heat capacities at constant pressure (assumed constant with ...

    Text Solution

    |

  5. Determine Delta U^(@) at 300K for the following reaction using the li...

    Text Solution

    |

  6. When 1.0 g of oxalic acid (H(2)C(2)O(4)) is burnt in a bomb calorimete...

    Text Solution

    |

  7. The enthalpy of neutralization of a Weak monoprotic acid (HA) in 1 M s...

    Text Solution

    |

  8. The enthalpy of combustion of propance (C(3)H(8)) gas in temes of give...

    Text Solution

    |

  9. For the following reaction, {:(C("diamond")+O(2)to CO(2)(g),, DeltaH...

    Text Solution

    |

  10. Ethanol can undergo decompostion to form two sets of products. If th...

    Text Solution

    |

  11. (p) Cis-2- butene to trans -2-butene, DeltaH(1) (Q)Cis-2-buteneto 1-...

    Text Solution

    |

  12. Calculate the amount of heat released at constant pressure when 10 mol...

    Text Solution

    |

  13. The reaction CH(4)(g)+Cl(2)(g)to CH(3)Cl(g)+HCl(g) has DeltaH=-25kcal ...

    Text Solution

    |

  14. Calculate the ethanly change for the given reaction from data provided...

    Text Solution

    |

  15. Lattice energy of Na(2)CO(3) is -205 KJ/mole and hydrogen energy of Na...

    Text Solution

    |

  16. If x(1) , x(2) and x(3) are enthalpies of H-H , O=O and O-H bonds resp...

    Text Solution

    |

  17. NH(3)(g)+3Cl(2)toNCl(3)(g)+3HCl(g),DeltaH(1) N(2)(g)+3H(2)(g)to2NH(3...

    Text Solution

    |

  18. For the combustion of 1 mole of liquid benzene at 27^(@)C the heat of ...

    Text Solution

    |

  19. Consider the equation: 4PH(3)(g)+80(2)(g)toP(4)O(10)(s)+6H(2)O(g), ...

    Text Solution

    |

  20. Molar enthalpy of combustion of C(2)H(2)(g),C("graphite")andH(2)(g) ar...

    Text Solution

    |