1.

Pressure of 1 g ideal gas X at 300 K is 2 atm. When 2 g of another gas Y is introduced in the same vessel at same temperature, the pressure become 3 atm. The correct relationship between molar mass of X and Y is :A. `M_(Y)=2 M_(X)`B. `M_(Y)=4 M_(X)`C. `M_(X)=4 M_(Y)`D. None of these

Answer» Correct Answer - b
(b) `PxxN`
`(P_(x))/(P_(y))=(n_(x))/(n_(y))`
` (2)/(1)=(1//m_(x))/(2//m_(y))`
`m_(y)=4m_(x)`


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