Two vessels of capactie 1.5 L and 2.0 L containing hydrogen at 750 mm pressure and oxygen at 100 mm pressure, respectivity are connected to each other through a valve. What will be the final pressure of the gaseous mixture assuming that the temperature remains constant?

Answer

A, B, C, D

Explanation

Final volume =1.5 L+2.0 L=3.5 L
For partial pressure of `H_(2)`, `P_(1)V_(1)=P_(2)V_(2), i.e., 750xx1.5=P_(2)xx3.5`
`p_(H_(2))=(750xx1.5)//3.5=321.43 mm`
For partial pressure of `O_(2)` `P_(1)'V_(1)'=P_(2)'V_(2)', i.e., 100xx2=P_(2)'xx3.5`
or `p_(O_(2))=(100xx2)//3.5=57.14 mm`
`P_("mixture")=321.43+57.14 mm=378.57 mm`