Question

In the reaction represented by the equation 2Al2O3 → 4A1 + 302, calculate the

Answer 1

Answer:

3.78 gm O2

Explanation:

In the reaction represented by the equation 2Al2O3 → 4A1 + 302, calculate the theoretical amount in grams of oxygen, O2 produced if 11.84 grams Al2O3 decomposes?

for every 2 moles of Al2O3, 3 mole of 02 are produced

molecular weight of Al2O3 =(2X27) + (3X32) =54+96= 150

11.84 gm Al2O3 = 11.84/150 moles =0.0789 moles

This will produce 3/2 X 0.0789 moles of O2 = 0.118 moles O2

mol wt of O2 is 32

0.118 moles weighs 0.118X32 = 3.78 gm O2