Question #139846
1. Insoluble salts are often by precipitation reactions.
(a) copy and complete the following precipitation reaction equation.
Mg(NO3)2 + K3PO4 =
(b) Derive a net ionic equation of the reaction (a).
(c) Give the name of precipitate (product).
(d) Based on redox type of reactions, define the meaning of the term “spectator ions”
(a) copy and complete the following precipitation reaction equation.
Mg(NO3)2 + K3PO4 =
(b) Derive a net ionic equation of the reaction (a).
(c) Give the name of precipitate (product).
(d) Based on redox type of reactions, define the meaning of the term “spectator ions”
Expert's answer
(a) 3Mg(NO3)2 + 2K3PO4 = Mg3(PO4)2 + 6KNO3
(b) 3Mg2+ + 6NO3- + 6K+ + 2PO43- = Mg3(PO4)2 + 6K+ + 6NO3-
From here, net ionic equation is as following:
3Mg2+ + 2PO43- = Mg3(PO4)2
(c) Trimagnesium phosphate
(d) Spectator ions are ions that do not participate in the reaction and are present in the solution without changing their form. Here, K+ and NO3- are spectator ions.
