Two cylinders $A$ and $B$ of equal capacity are connected to each other via a stop cock. A contains an Ideal gas at standard temperature and pressure. $B$ is completely evacuated. The entire system is thermally insulated. The stop cock is suddenly opened. The process is :
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Free expansion i.e. expansion against vacuum is adiabatic in nature for all type of gases. It should be noted that temperature final temperature is equal to initial temperature for ideal gases.
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