4 g carbon was heated with 8 g of sulfur. How much carbon disulfide (CS2) will be formed when the reaction is complete? What will be its percentage purity?
Obviously sulphur will be limiting reactant. 8 g of sulphur will produce CS2 = 7664 × 8 = 9.5 g Amount of carbon reacted = 1264 × 8 = 1.5g Amount of carbon left = 4 – 1.5 = 2.5 g Total weight of the products = 9.5 + 2.5 = 12 g % purity of CS2 in the product = 9.512 × 100 = 79.2.
