The % Oxygen in the compound Cobalt V Carbonate : 57.42%
Given
Compound Cobalt V Carbonate- Co₂(CO₃)₅
Required
% composition of Oxygen
Solution
Number of Oxygen in Co₂(CO₃)₅ = 3 x 5 = 15
Molar mass of Cobalt V Carbonate- Co₂(CO₃)₅ :
=2.Ar Co + 5.Ar C+15. Ar O
=2.59 + 5.12 + 15.16
= 118+60+240
=418 g/mol
% Oxygen = (15.Ar O / MW Co₂(CO₃)₅) x 100%
% Oxygen = (240/418) x 1005
% Oxygen = 57.42
