Question

REAC 422: Studying Chemical Return Wing Ch u (3) the designation (aq) following the formula of a compound 3. (1) Write the complete lonic equation for the double displacement reaction that occurs when aque- ous solutions of barium nitrate, Ba(NO2)2, and sodium chromate (Na Croa) are mixed. (4) decomposition reaction (2) Name the spectator ions in this chemical reaction. (5) coefficients (3) Write the net ionic equation for this reaction.

please help

Answer 1

(3).

(1)

Barium nitrate reacts with sodium chromate to form barium chromate and sodium nitrate

The molecular equation as follows:

Ba(NO3)2 (aq) + Na2CrO4(aq) -----> BaCrO4(s) + 2NaNO3(aq)

Total ionic equation:

Ba2+(aq) + 2NO3^-(aq) + 2Na+(aq) + CrO4^2-(aq) -----> BaCrO4(s) + 2Na+(aq) + 2NaNO3^-(aq)

(2) The ions which are present both side of reaction are called as Spectator ions.

Here the spectator ions are sodium ion Na+ and nitrate ion NO3^-

(3)

Net ionic equation:

Cancel the Spectator ions

Ba2+(aq) + CrO4^2-(aq) -----> BaCrO4(s)