A 10L flask at 300K contains a gaseous mixture of CO and `CO_(2)` at a total pressure of 2.0 atm. If 0.2 mol of CO is present, the partial pressure of `CO_(2)` is ( Use R = 0.082 atm `mol^(-1) K^(-1)` )

Options

A. 0.49 atm
B. 1.49 atm
C. 1.51 atm
D. 2.49 atm

Answer

C

Explanation

`p = p ( CO ) + p ( CO_(2)) = 2.0 atm`
`p(CO) = ( 0.2 xx 0.082 xx 300)/( 10)`
`= 0.49` atm
`p ( CO_(2)) = 2-0.49 = 1.51 atm`