(D) Statement-$I$ is incorrect because internal energy $(U)$ is a state function,but work $(w)$ is a path function,not a state function.Statement-$II$

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Statement-$I$ is not correct,but statement-$II$ is correct

(D) Statement-$I$ is incorrect because internal energy $(U)$ is a state function,but work $(w)$ is a path function,not a state function.Statement-$II$ is correct because during free expansion into a vacuum,the external pressure $(P_{ext})$ is $0$. Since $w = -P_{ext} \Delta V$,the work done $(w)$ is $0$.

Class 11 Chemistry Thermodynamics Mix Examples-Thermodynamics and Thermochemistry

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Consider the following statements:
Statement-$I$: Both internal energy $(U)$ and work $(w)$ are state functions.
Statement-$II$: During the free expansion of an ideal gas into vacuum,the work done is zero.
The correct answer is:

AP EAMCET 2025 All AP EAMCET

A
Both statement-$I$ and statement-$II$ are correct
B
Both statement-$I$ and statement-$II$ are not correct
C
Statement-$I$ is correct,but statement-$II$ is not correct
D
Statement-$I$ is not correct,but statement-$II$ is correct

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Mix Examples-Thermodynamics and Thermochemistry

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$(i)$ Heat capacity
$(ii)$ Molar heat capacity
$(iii)$ Universal gas constant
$(iv)$ Specific heat capacity

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The heat of neutralization of a strong acid and a strong alkali is $-57.0 \ kJ \ mol^{-1}$. The heat released when $0.5 \ mole$ of $HNO_3$ solution is mixed with $0.2 \ mole$ of $KOH$ is ....$kJ$

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The heat evolved during the combination of $24 \, g$ of $C$ and $128 \, g$ of $S$ according to the reaction $C + 2S \to CS_2$ with $\Delta H = 22.0 \, kcal$ is:

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The heats of combustion of $C_2H_4, C_2H_6$ and $H_2$ are $-1409.5 \, kJ, -1558.3 \, kJ$ and $-285.6 \, kJ$ respectively. The heat of hydrogenation of ethene is ...... $kJ$.

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Consider the following statements:Statement-$I$: Both internal energy $(U)$ and work $(w)$ are state functions.Statement-$II$: During the free expansion of an ideal gas into vacuum,the work done is zero.The correct answer is:

Similar Questions

How many quantities have a similar unit as molar entropy?$(i)$ Heat capacity$(ii)$ Molar heat capacity$(iii)$ Universal gas constant$(iv)$ Specific heat capacity

Latent heat of vaporisation of a liquid at $500 \ K$ and $1 \ atm$ pressure is $20.0 \ kcal/mol$. What will be the change in internal energy $(\Delta E)$ of $3 \ mol$ of liquid at same temperature in $kcal$?

The heat of neutralization of a strong acid and a strong alkali is $-57.0 \ kJ \ mol^{-1}$. The heat released when $0.5 \ mole$ of $HNO_3$ solution is mixed with $0.2 \ mole$ of $KOH$ is ....$kJ$

The heat evolved during the combination of $24 \, g$ of $C$ and $128 \, g$ of $S$ according to the reaction $C + 2S \to CS_2$ with $\Delta H = 22.0 \, kcal$ is:

The heats of combustion of $C_2H_4, C_2H_6$ and $H_2$ are $-1409.5 \, kJ, -1558.3 \, kJ$ and $-285.6 \, kJ$ respectively. The heat of hydrogenation of ethene is ...... $kJ$.

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Consider the following statements:
Statement-$I$: Both internal energy $(U)$ and work $(w)$ are state functions.
Statement-$II$: During the free expansion of an ideal gas into vacuum,the work done is zero.
The correct answer is:

How many quantities have a similar unit as molar entropy?
$(i)$ Heat capacity
$(ii)$ Molar heat capacity
$(iii)$ Universal gas constant
$(iv)$ Specific heat capacity