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van't Hoff equation is...

van't Hoff equation is

A

`Delta G^(@)=RT log_(e )K_(P)`

B

`-Delta G^(@)=RT log_(e )K_(P)`

C

`Delta G^(@)=RT^(2)lnK_(P)`

D

None

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The correct Answer is:
B
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Variation of equilibrium constan K with temperature is given by van't Hoff equation InK=(Delta_(r)S^(@))/R-(Delta_(r)H^(@))/(RT) for this equation, (Delta_(r)H^(@)) can be evaluated if equilibrium constans K_(1) and K_(2) at two temperature T_(1) and T_(2) are known. log(K_(2)/K_(1))=(Delta_(r)H^(@))/(2.303R)[1/T_(1)-1/T_(2)] Select the correct statement :

Variation of equilibrium constan K with temperature is given by van't Hoff equation InK=(Delta_(r)S^(@))/R-(Delta_(r)H^(@))/(RT) for this equation, (Delta_(r)H^(@)) can be evaluated if equilibrium constans K_(1) and K_(2) at two temperature T_(1) and T_(2) are known. log(K_(2)/K_(1))=(Delta_(r)H^(@))/(2.303R)[1/T_(1)-1/T_(2)] Variation of log_(10) K with 1/T is shown by the following graph in which straight line is at 45^(@) hence DeltaH^(@) is :

Variation of equilibrium constan K with temperature is given by van't Hoff equation InK=(Delta_(r)S^(@))/R-(Delta_(r)H^(@))/(RT) for this equation, (Delta_(r)H^(@)) can be evaluated if equilibrium constants K_(1) and K_(2) at two temperature T_(1) and T_(2) are known. log(K_(2)/K_(1))=(Delta_(r)H^(@))/(2.303R)[1/T_(1)-1/T_(2)] For an isomerization X(g)hArrY(g) the temperature dependency of equilibrium constant is given by : lnK=2-(1000)/T The value of Delta_(r)S^(@) at 300 K is :

Variation of equilibrium constan K with temperature is given by van't Hoff equation InK=(Delta_(r)S^(@))/R-(Delta_(r)H^(@))/(RT) for this equation, (Delta_(r)H^(@)) can be evaluated if equilibrium constants K_(1) and K_(2) at two temperature T_(1) and T_(2) are known. log(K_(2)/K_(1))=(Delta_(r)H^(@))/(2.303R)[1/T_(1)-1/T_(2)] The equilibrium constant Kp for the following reaction is 1 at 27^(@)C and 4 at 47^(@)C. A(g)hArrB(g)+C(g) For the reaction calculate enthalpy change for the B(g)+C(g)hArrA(g) (Given : R=2cal//mol-K)

Van't Hoff's equation for a chemical reaction under equilibrium is given by standard reaction enthalpy at temperature T and K is the equilibrium constant . Predict how K will vary with temperature for an exothermic

For which of the following solutes the van't Hoff factor is not greater than one ?

Which of the following representations of I (van't Hoff factor) is not correct ?

Give one example each when van't Hoff factor is 2 and (1)/(2) .

ALLEN-THERMODYNAMICS -EXERCISE -2
  1. For the reaction Ag(2)O(s) to 2Ag(s)+1/2 O(2)(g) the value of triangle...

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  2. For hypothetical reversible reaction 1//2A(2)(g) +3//2B(2)(g) rarr A...

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  3. For the precipitation of AgCl by Ag^(+) ions and HCl

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  4. What is the sign of Delta G for the process of ice melting at 283 K ?

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  5. What is the free energy change triangleG when 1.0 mole of water at 100...

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  6. A reaction A +B rarr C+D +q is found to have a positive entropy change...

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  7. Equilibrium constant of a reaction is related to :

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  8. van't Hoff equation is

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  9. If G^(@) gt 0 for a reaction then

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  10. The equilibrium constant for a reaction is 10. What will be the value ...

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  11. When the value of entropy is greater then the ability for useful work ...

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  12. The process of evaporation of a liquid is accompanied by

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  13. For the process, CO(2)(s) to CO(2)(g)

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  14. Which of the following provide exceptions to third law of thermodynami...

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  15. The Gibbs free energy change of a reaction at 27^(@)C is -26 Kcal. and...

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  16. Which of the following reaction is expected never to be spontaneous :-

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  17. The Joule. Thomson expansion of a gas is an

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  18. In case of an ideal gas, Joule Thomson coefficient is -

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  19. Inversion temperature is

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  20. The inversion temperature for vander Waal's gas is

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