Question

In the laboratory you dissolve 12.8 g of ammonium carbonate in a volumetric flask and add water to a total volume of 125 mL What is the molarity of the solution? М. What is the concentration of the ammonium cation? М. М. What is the concentration of the carbonate anion?

Molarity: Ion Concentration

Answer 1

no. of in a Molarity is mores of 1000 me of defined as the solute dissolved solution. Here solute e ammonium carlonate and solvent h water. The molecular formula of ammonium carbonate b = (NH4)₂ Cog. The molar mass = 96 g/mol. The ammonium carbonate ý taken = 12.8 m. . 12.8 gm of (Nita) Coz - 12.8 9 mol = 0.133 mol . In 125 ml of solution o.133 mol of (NH4)2 Coz ļ present. In 1000 me of solution present (Why) Coz= 0.133 x 1000 = 1.06 mol 125 . Molarity of ammonium Carbonate = 1.06(M)

(NH4) Coz is dissociated in the solution as (NH₂ ) coz (a) = 2NH4 (aq) + CO2 (ar) 2- so, from 1 mol of (NH4) Coz 2 mol of Nithion and 1 mod of coz ion is produced on Coneen u. from 1:06 mol of (NH4)2 Coz 2.14 mol of NHht and 1:06 mol Of což ion į produced which gets dissolved in 1000 me of solution. 2- . Molarity of - Catasin ammonium 2.14 CM) Molarity of anaoin Carbonate = 1:06 M)