Question

The following molecular equation represents the reaction that occurs when aqueous solutions of silver(I) nitrate and chromium(III) bromide are combined. 3AgNO3 (aq) + CrBr3 (aq) --> 3AgBr (s) + Cr(NO3)3 (aq) Write the balanced net ionic equation for the reaction.

Answer 1

Answer:

$3Ag^+_{(aq)}+3Br^{-}_{(aq)}\rightarrow 3AgBr_{(s)}$

Explanation:

Complete ionic equation : In complete ionic equation, all the substance that are strong electrolyte and present in an aqueous are represented in the form of ions.

Net ionic equation : In the net ionic equations, we are not include the spectator ions in the equations.

Only the species which are present in aqueous state dissociate.

Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides.

The balanced molecular equation will be,

$3AgNO_3_{(aq)}+CrBr_3_{(aq)}\rightarrow 3AgBr_{(s)}+Cr(NO_3)_3_{(aq)}$

The complete ionic equation in separated aqueous solution will be,

$3Ag^+_{(aq)}+3NO_3^-_{(aq)}+Cr^{3+}_{(aq)}+3Br^{-}_{(aq)}\rightarrow 3AgBr_{(s)}+3NO_3^-_{(aq)}+Cr^{3+}_{(aq)}$

In this equation the species present are, $Cr^{3+}\text{ and }3NO_3^-$ are the spectator ions.

Hence, the net ionic equation contains specie is  

$3Ag^+_{(aq)}+3Br^{-}_{(aq)}\rightarrow 3AgBr_{(s)}$