One litre of `O_(2)` and one litre of `h_(2)` are taken in a vessel of 2 litre capacity at `NTP` The gases are made to combine to form water .
If the vessel is heated to `100^(@)C` the total pressure is .

Options

A. `0.03` atm
B. `2.02 atm`
C. `1.02 atm`
D. `1.08 atm`

Explanation

On heating to `100^(@)C,H_(2)O` exists as vapours
`:.` Total moles pressent at `100^(@)C`
= moles of `H_(2)O` +moles of `O_(2)`
`=4.46 xx 10^(-2) +2.23 xx 10^(-2)`
` =6.69 xx 10^(-2)`
Volume of vessel `=2 litre, T =373 K`
`:. P = (nRT)/(V) = (6.69 xx 10^(-2) xx 0.0821 xx 373)/(2)`
`= 1.02 atm` .