underset((16.8gm))("Solid"(A))overset(Delta)rarr underset((4.4gm))("Acidic gas") (B)+ Neutral liuqid (C)+ Solid (D) Aqueous solution of (D) overset(BaCI_(2)sol)underset("in excess")rarr (Solid E weighing 19.7 gm) Identify E:

underset((16.8gm))("Solid"(A))overset(Delta)rarr underset((4.4gm))("Ac

1.	underset((16.8gm))("Solid"(A))overset(Delta)rarr underset((4.4gm))("Acidic gas") (B)+ Neutral liuqid (C)+ Solid (D) Aqueous solution of (D) overset(BaCI_(2)sol)underset("in excess")rarr (Solid E weighing 19.7 gm) Identify E:
Answer» `BaCO_(3)` `Na_(2)CO_(3)` `CaCO_(3)` `K_(2)CO_(3)` Solution :According to LAW of CONSERVATION, WT. of solid `(D) = (16.8 gm)-(4.4 +1.8 +x)` `RARRX = 10.6 gm` `BaCO_(3) ("mole") = (19.7)/(197) = 0.1` mol 0.1 mole of `D rArr (10.6)/(x gm//mol)`