Question

Calculate the mass of sulfur dioxide produced by burning 16 g of sulfur in excess of oxygen in contact process. 

(Average atomic mass : S = 32 u, O = 16 u)

Answer 1

Given : 

Mass of sulphur (reactant) = 16 g 

To find :

Mass of sulphur dioxide (product) 

Calculation :

32 g of sulphur combine with 32 g oxygen to form 64 g of sulphur dioxide as follows :

Hence,

(0.5 × 32 = 16 g) of sulphur will combine with (0.5 × 32 = 16 g) of oxygen to give (0.5 × 64 = 32 g) sulphur dioxide. 

∴ Mass of sulphur dioxide produced = 32 g