When `20ml` of mixture of `O_(2)` and `O_(3)` is heated the volume becomes `29ml` and disappears in alkaline pyragallol solution. What is the volume precent of `O_(2)` in the originl mixture ? .

Options

A. `90%`
B. `10%`
C. `18%`
D. `2%`

Answer

B

Explanation

`CO+(1)/(2)O_(2)rarrCO_(2)`
`x" " "used" (x)/(2)" "x`
`x=80" "x+yimpliesy=20`
`N_(2)=100`