[اللؤلؤه الورديه]

:)

If a reaction results in a net increase in the number of
moles of a gas, then the system does work on the
surroundings (expansion).

Conversely, if more gas molecules are consumed than are

produced

, work is done on the system by the surroundings
(compression).

Finally no work is done if there is no net change in number

of moles of gases .


وجزاكم الله كل خير


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