During the expansion of an ideal gas- the work done by the gas is 100 J and the heat capacity of the process is found to be -2 J -0 C- Find U of the gas if the final temperature of the gas is 25- C higher than its initial temperature- A- -40 JB- -50 JC- -30 JD- -80 J

The correct option is B 50 JFrom first law of thermodynamic U = q + w q = nbsp; +2 J/^oC = 2×25 = 50 J W = 100 J So, nbsp;U = 50 100 = 50 J Hence, nb ...

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Standard XII

Chemistry

First Law of Thermodynamics

During the ex...

Question

During the expansion of an ideal gas, the work done by the gas is $100 J$ and the heat capacity of the process is found to be $+ 2 J /^{o} C$ . Find $△ U$ of the gas if the final temperature of the gas is $25^{o} C$ higher than its initial temperature.

- 40 J

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- 50 J

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- 30 J

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- 80 J

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Solution

The correct option is B $- 50 J$
From first law of thermodynamic
$△ U = q + w$
$q = + 2 J /^{o} C = 2 \times 25 = 50 J$
$W = - 100 J$
So, $△ U = 50 - 100 = - 50 J$
Hence, $△ U = - 50 J$

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First Law of Thermodynamics

Standard XII Chemistry

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During the expansion of an ideal gas, the work done by the gas is 100 J and the heat capacity of the process is found to be +2 J/oC. Find △U of the gas if the final temperature of the gas is 25oC higher than its initial temperature.

The correct option is B −50 JFrom first law of thermodynamic △U=q+w q=+2 J/oC=2×25=50 J W=−100 J So, △U=50−100=−50 J Hence, △U=−50 J

During the expansion of an ideal gas, the work done by the gas is $100 J$ and the heat capacity of the process is found to be $+ 2 J /^{o} C$ . Find $△ U$ of the gas if the final temperature of the gas is $25^{o} C$ higher than its initial temperature.

The correct option is B $- 50 J$
From first law of thermodynamic
$△ U = q + w$
$q = + 2 J /^{o} C = 2 \times 25 = 50 J$
$W = - 100 J$
So, $△ U = 50 - 100 = - 50 J$
Hence, $△ U = - 50 J$