Calculate the total pressure in a mixture of `4 g` of oxygen and `2 g` of hydrogen confined in a total volume of `1 L` at `0^(@)C`.

Options

A. `25.215 atm`
B. `31.205 atm`
C. `45.215 atm`
D. `15.210 atm`

Answer

A

Explanation

No. of moles of `O_(2) = (4)/(32) = 0.125`
No. of moles of `H_(2) = (2)/(2) = 1`
Total no. of moles `= 1 + 0.125 = 1.125`
`P = (nRT)/(V) = (1.125 xx 0.082 xx 273)/(1) = 25.184 atm`.