Question

20 ml each of oxygen and hydrogen and 10 ml of carbon monooxide are exploded in an enclosure.What will be the volume and composition of the resulting mixtureof the gaseswhen they are cooled to room temperature.
$2H _{2} +O _{2} -->2H _{2} O$
$2CO+O _{2} -->2CO _{2}$

Answer 1

according to G-lussac's law....20 ml of hydrogen reacts with 10 ml of oxygen... 

volume ratio is 2:1... therefore 20 ml of water is produced.

in the second case 10 ml of carbon monoxide produces 10 ml of carbon dioxide when reacts with 10 ml of oxygen