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Standard XII

Chemistry

Work Done in Isothermal Reversible Process

Which one of ...

Question

Which one of the following is correct for the isothermal expansion of an ideal gas?

U and H increases

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U increases but H decreases

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U and H are unchanged

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H increases but U decreases

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Solution

The correct option is C U and H are unchanged
In isothermal reversible process, ideal gas has constant temperature, $Δ T = 0$ and so $Δ U = n C_{v} Δ T = 0$ and $Δ H = n C_{p} Δ T = 0$ .

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Work Done in Isothermal Reversible Process

Standard XII Chemistry

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Which one of the following is correct for the isothermal expansion of an ideal gas?

The correct option is C U and H are unchangedIn isothermal reversible process, ideal gas has constant temperature, ΔT=0 and so ΔU=nCvΔT=0 and ΔH=nCpΔT=0.

The correct option is C U and H are unchanged
In isothermal reversible process, ideal gas has constant temperature, $Δ T = 0$ and so $Δ U = n C_{v} Δ T = 0$ and $Δ H = n C_{p} Δ T = 0$ .