Part B Constants | Periodic Table Solubility rules for ionic compounds in water

Question

Part B Constants | Periodic Table Solubility rules for ionic compounds in water are shown for your reference, Compound Rule Identify A, X, and Y in the unknown compounds AB and XY. If a substance cannot be classified as A, X, or Y, classify it as "Neither A, X, nor Y." Drag the appropriate items to their respective bins. » View Available Hint(s) Reset Help Lit.Nat Kt, or Always soluble NH, + NO; or C2H5O2- Always soluble Cl-, Br, Insoluble with Agt, Hg,2+, or Pb2+. NH." ou Ba" co?" ME" po" Cu" so?) Na" Figure Solution AB(aq) Neither A, X, nor Y KOH(aq) white ppt Solid XY(s) HCl(aq) solution + gas (NH,), SO,(aq) white ppt

Explanation / Answer

The insoluble compound in the unknown be represented by XY. The solid that was insoluble in water dissolves in HCl(aq) with the evolution of a gas: (Carbonate) treated with (NH4)2SO4(aq) and yields a second white precipitate: (Barium)
XY was BaCO3.

X= Ba+2 Y=CO2-3

Let the soluble compound in the unknown be represented by AB
When aqueous solution is treated with KOH(aq) and yields a white precipitate then that may be magnesium or Barium
But AB dissolve in water this means that AB is sulfate of magnesium
AB is MgSO4.

A=Mg+2 B=SO4-2. Rest are neither A,X nor Y.

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