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Question

Which of the following statement (s) is /are correct


A

For adiabatic expansion of an ideal gas = constant

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B

Work done in reversible isothermal expansion is greater than that done in rev adiabatic expansion for the same increase of volume.

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C

Buffer capacity is maximum when concentration of weak acid and salt of its conjugate base is equal

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D

Equilibrium constant of an exothermic reaction decreases with increase of temperature

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Solution

The correct options are
A

For adiabatic expansion of an ideal gas = constant


B

Work done in reversible isothermal expansion is greater than that done in rev adiabatic expansion for the same increase of volume.


C

Buffer capacity is maximum when concentration of weak acid and salt of its conjugate base is equal


D

Equilibrium constant of an exothermic reaction decreases with increase of temperature


For adiabatic expansion of an ideal gas TVγ1 = constant.

Work done in reversible isothermal expansion is greater than that done in rev adiabatic expansion for the same increase of volume.

Buffer capacity is maximum when concentration of weak acid and salt of its conjugate base is equal.

Equilibrium constant of an exothermic reaction decreases with increase of temperature.

Hence, all the statements are correct.


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