Question

2H20 -----> 2H2+O2
if 30 mL of hydrogen are produced in the above reaction, how many mL of Oxygen are produced?

Answer 1

15 ml of hydrogen will produce because it contain half of the molecules of hydrogen

Answer 2

First , by gay lussac law, whenever gases react they do so in volume which bears a simple ration to one another and also to the volume of the gaseosus product formed.