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System, Surroundings, Intensive, Extensive Properties

For isotherma...

Question

For isothermal process, if heat added is $Q$ & work done by gas is $w$ , then

A

\frac{Q}{w} = 2

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B

\frac{Q}{w} = 1

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C

Q = 0, w \neq 0

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D

w = 0, Q \neq 0

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Solution

The correct option is B $\frac{Q}{w} = 1$
$Q = Δ U + w$
For isothermal processes, $Δ U = 0$
$\Rightarrow Q = w$

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