Home
Class 11
CHEMISTRY
For a particular reaction, triangleH^@ =...

For a particular reaction, `triangleH^@ = -38.3 kJ mol^-1` and `triangleS^@ = -113JK^-1 mol^-1`. This reaction is

A

spontaneous at all temperatures

B

non-spontaneous at all temperatures

C

spontaneous at temperature below `66^@C`

D

spontaneotis at temperature above `66^@C`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • STATES OF MATTER (GASES & LIQUIDS)

    PATHFINDER|Exercise QUESTION BANK|280 Videos

Similar Questions

Explore conceptually related problems

For a given reaction , Delta H = 3.5 kJ mol^(-1) and Delta S = 83.6 J * K^(-1) mol^(-1) . The reaction is spontaneous at (assume DeltaH and Delta S do not vary with temperature) -

For the reaction at 298K 2A+B to C triangleH = 400 kJ mol^-1, triangleS = 0.2 kJ K^-1 mol^-1 At what temperature will the reaction become spontaneous considering triangleH & triangleS to be constant over the temperature range.

For the reaction 2A(g) + B(g) to 2D(g), triangleU^@ = -10.5kJ and triangleS^@ = -44.1 JK^-1 Calculate triangleG^@ for the reaction, and predict whetehr the reaction may occur spontaneously. ( R = 8.314 xx 10^-3 kJ K^-1 mol^-1, T = 298 K )

For a given reaction, DeltaH=35.5kJ*mol^(-1) and DeltaS=83.6J*mol^(-1) . The reaction is spontaneous at (assume that DeltaH and DeltaS do not vary with temperature)-

Calculate the temperature at which DeltaG = -5.2 kJ mol^-1, DeltaH = 145.6 kJ mol^-1 and DeltaS = 216 J K^-1 mol^-1 for a chemical reaction

For a reaction, ArarrB , DeltaH = +xkJ .mol^(-1) and activation energy is "ykj.mol"^(-1) . If activation energy of the reaction , BrarrA " is z kJ.mol"^(-1) , then -

The values of DeltaH and DeltaS of a certain reaction are -400 kJ mol^-1 and -20 kJ mol^-1 respectively. The temperature below which the reaction is spontaneous is

Calculate the enthaply change for the process : C Cl_4 (g) to C (g)+ 4Cl(g) and calculate the bond enthalpy of C-Cl in C Cl_4(g) triangle(vap))H^(@) (C Cl_4 )= 30.5 kJ mol^-1 trianglef H^(@)(C Cl_4) = -135.5 kJ mol^-1 triangle_a H^@(C) = 715.0 kJ mol^-1 triangle_a H^@(Cl_2)( atomisation ) = 242 kJ mol^-1

In the reaction N_(2(g)) + O_(2(g)) to 2NO_((g)), DeltaH^@ reaction is + 179.9 kJmol^(-1) and DeltaS_("reaction")^@ = 66.09 JK^(-1)mol^(-1) . Calculate DeltaG^@ reaction at 300K.

For a reactio, Delta H= - 10000 " J. mol"^(-1) and Delta S = - 33.3 " J. mol"^(-1). K^(-1) . At what temperature will the reaction procees spontaneously from (i) left to right : (ii) right to left ?

PATHFINDER-THERMODYNAMICS-QUESTION BANK
  1. For an ideal gas, the Joule Thomson coefficient is

    Text Solution

    |

  2. If 150 kJ of energy is needed for muscular work to walk a distance of ...

    Text Solution

    |

  3. For a particular reaction, triangleH^@ = -38.3 kJ mol^-1 and triangleS...

    Text Solution

    |

  4. For a process-to be in equilibrium, it is necessary that

    Text Solution

    |

  5. Which of the following statement(s) must be true for the entropy of a ...

    Text Solution

    |

  6. Which of the following conditions may lead to a non-spontaneous change...

    Text Solution

    |

  7. For the process, NH3(g) + HCl(g) to NH4Cl(s)

    Text Solution

    |

  8. Which of the following statements Is false ?

    Text Solution

    |

  9. In thermodynamics, a process is called reversible when

    Text Solution

    |

  10. Which of the following is not correct for adiabatic process ?

    Text Solution

    |

  11. A piston filled with 0.04mole of an ideal gas expa nds teversibly from...

    Text Solution

    |

  12. Temperature of an ideal gas increases in

    Text Solution

    |

  13. Which of the following statements is incorrect

    Text Solution

    |

  14. Which is equal to total work done ?

    Text Solution

    |

  15. ((delta DeltaH)/(delta P))T for an ideal gas is equal to

    Text Solution

    |

  16. The standard enthalpy of formation of H2O(g) at 298 K is -241.82 kJ mo...

    Text Solution

    |

  17. Which of the following compounds has a positive enthalpy of solution?

    Text Solution

    |

  18. When a bomb calorimeter is used to determine the heat of reaction, whi...

    Text Solution

    |

  19. The heat of combustion of benzoic acid at constant volume is -321.3 kJ...

    Text Solution

    |

  20. The molar heats of combustion of C2H2(g),C(graphite) and H2(g) are -31...

    Text Solution

    |