Write a balanced chemical equation for the reaction below (remember to include states) and indicate the type of reaction (S, D, C, SD, DD) Be sure to show your work.

Question

a) solid calcium oxide react with water to form aqueous calcium hydroxide

b) magnesium is added to aqueous aluminum chloride

c) aqueous phosphoric acid is mixed with aqueous calcium hydroxide

Answer 1

a) CaO(s) + H₂O(l) ==> Ca(OH)₂(aq) S (synthesis)

b) 3Mg(s) + 2AlCl₃(aq) ==> 3MgCl₂(aq) + 2Al(s) SD (single displacement)

c) 2H₃PO₄(aq) + 3Ca(OH)₂(aq) ==> Ca₃(PO₄)₂(s) + 6H₂O(l) DD (double displacement)