JEE Main & Advanced Chemistry States of Matter Question Bank Ideal gas equation and Related gas laws

  • question_answer If 20\[c{{m}^{3}}\] gas at 1 atm. is expanded to 50 \[c{{m}^{3}}\] at constant T, then what is the final pressure   [CPMT 1988]          

    A)                 \[20\times \frac{1}{50}\]             

    B)                 \[50\times \frac{1}{20}\]

    C)                 \[1\times \frac{1}{20}\times 50\]             

    D)                 None of these

    Correct Answer: A

    Solution :

               At constant \[T,{{P}_{1}}{{V}_{1}}={{P}_{2}}{{V}_{2}}\]                                 \[1\times 20={{P}_{2}}\times 50\];  \[{{P}_{2}}=\frac{20}{50}\times 1\]


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