Phosphoric acid, one of the acids used in some cola drinks, is produced by the reaction of…

Phosphoric acid, one of the acids used in some cola drinks,
is produced by the reaction of phosphorus(V) oxide, an acidic oxide, with
water. Phosphorus(V) oxide is prepared by the combustion of phosphorus.

 (a) Write the empirical formula of phosphorus(V) oxide.

(b) What is the molecular formula of phosphorus(V) oxide if
the molar mass is about 280.

(c) Write balanced equations for the production of
phosphorus(V) oxide and phosphoric acid.

 (d) Determine the mass of phosphorus required to make 1.00
× 104 kg of phosphoric acid, assuming a yield of 98.85%.