In an isothermal reversible compression of an ideal gas the sign of q, $\Delta S$ and w are respectively (a) +, –, – (b) –, +, – (c) +, –, + (d) –, –, +

In an isothermal reversible compression of an ideal gas the sign of q, Δ S and w are respectively (a) +, –, –

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\Delta S

(a) +, –, –

(b) –, +, –

(d) –, –, +

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Step 1. For an ideal gas, $\Delta U=0$ at constant temperature (internal energy of an ideal gas depends only on $T$ ).

Step 2. Compression means work is done ON the gas, so $w$ is POSITIVE (Table 7.3).

Step 3. Since $\Delta U=q+w=0$ , $q=-w$ , and since $w>0$ , $q$ must be NEGATIVE -- the gas releases heat to keep its temperature constant while being compressed. …

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Q.In an isothermal reversible compression of an ideal gas the sign of q, $\Delta S$ and w are respectively

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Q.In an isothermal reversible compression of an ideal gas the sign of q, ΔS\Delta SΔS and w are respectively

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Q.In an isothermal reversible compression of an ideal gas the sign of q, $\Delta S$ and w are respectively

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