JEE Main & Advanced Sample Paper JEE Main Sample Paper-13

  • question_answer
    The stop cock connecting the two bulbs of volume 5 L and 10 L containing an ideal gas at 9 atm and 6 atm respectively, is opened. What is the final pressure, if the temperature remains same?

    A)  2 atm                   

    B)  7 atm            

    C)  10 atm                

    D)  12 atm

    Correct Answer: B

    Solution :

     No. of moles of gas in bulb \[x=-\frac{1}{2}\] No. of moles of gas in bulb \[x=\frac{1}{4}\] \[x\] Total moles when connected \[x=\frac{1}{4}\,0.25\] \[1\times {{10}^{-9}}C\] Pressure of gas when connected \[9\times {{10}^{-9}}C\] \[{{C}_{4}}\] \[=C+C=2C\]


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