Question

Give relevant equations for the following preparations: [2] a) Magnesium oxide from Magnesium b)Phosphoric acid from Phosphorus pentoxide

Answer 1

a) Preparation of magnesium oxide from magnesium :-

2Mg + O2 --> 2MgO

b) Preparation of Phosphoric acid from phosphorus pentoxide :-

P2O5 + 3H2O --> 2H3PO4