`200 cm^(3)` of carbon monoxide is mixed with `200 cm^(3)` of oxygen at room temperature and ignited. Calculate the vol. of `CO_(2)` formed on cooling to room temperature. What other gas if any may also be present.

Explanation

`underset(20 cm^(3))(2 CO_(2)(g)) + underset(200 cm^(3))(O_(2)(g)) to 2CO_(2)(g)`
2 vol. : 1 vol `to` 2 vol.
According to Lussac's law `underset(200 cm^(3))(2 xx 100) underset(100 cm^(3))(1 xx 100) underset(?)(2 xx 100)`
Volume of carbon dioxide formed is `200 cm^(3)` and the other gas present is `100 cm^(3)` of oxygen.