Question

Use the activity series below to predict the products of each of the following reactions. Do not worry about balancing the equations.

A list of elements with right arrows between them: upper L i, upper K, upper B a, upper S r, upper C a, upper N a, upper M g, upper A l, upper M n, upper Z n, upper C r, upper F e, upper C d, upper C o, upper N i, upper S n, upper P b, upper H, upper S b, upper B i, upper C u, upper A g, upper P d, upper H g, upper P t, upper A u.

Zn3(PO4)2 + Ca → ?

Answer 1

Calcium is above zinc in the activity series, so Ca will displace Zn2+. Products: calcium phosphate and elemental zinc.

Unbalanced: Zn3(PO4)2 + Ca → Ca3(PO4)2 + Zn

Balanced: Zn3(PO4)2 + 3 Ca → Ca3(PO4)2 + 3 Zn