Question

If an electric discharge produces 800 cm3 of ozone (O3), how many cm3 of oxygen (O2) are required?

3O2(g) ---> 2O3(g)

Answer 1

Since the ozone formation processoccurs in the gas phase, for calculating the amount of oxygen should be considered coefficients reaction. 800 cm³ *(3/2) = 1200cm³