An ideal gas is allowed to expand from 1 , L | vedclass

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(A) The work done during expansion against a constant external pressure is given by the formula: $W = -P_{ext} \cdot \Delta V$. Given: $P_{ext} = 1 \,

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$-0.9$

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(A) The work done during expansion against a constant external pressure is given by the formula: $W = -P_{ext} \cdot \Delta V$. Given: $P_{ext} = 1 \, bar$, $V_1 = 1 \, L$, $V_2 = 10 \, L$. $\Delta V = V_2 - V_1 = 10 \, L - 1 \, L = 9 \, L$. $W = -1 \, bar \cdot 9 \, L = -9 \, bar \cdot L$. Since $1 \, bar \cdot L = 100 \, J$, then $W = -9 	imes 100 \, J = -900 \, J$. Converting to $kJ$: $W = -900 \, J / 1000 = -0.9 \, kJ$.

An ideal gas is allowed to expand from $1 \, L$ to $10 \, L$ against a constant external pressure of $1 \, bar$. The work done in $kJ$ is

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