Carbonates, phosphates, borates, and arsenates—except those of the ammonium ion and the alkali metals—are insoluble. They tend to just be solids and not dissolve much in water. Write (on paper) the expression for the equilibrium constant for the reaction represented by the equation   3Ba2+(aq)+2PO43−(aq)⇌Ba3(PO4)2(s) The solid doesn't have a concentration, so use the number 1 in its place. Please answer the following question in the text box below. You can be brief. Is Kc > 1,   Kc < 1,   or  Kc  ≈ 1?

Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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Chapter16: Principles Of Chemical Reactivity: The Chemistry Of Acids And Bases
Section: Chapter Questions
Problem 106GQ: The hydrogen phthalate ion, C8HsO4, is a weak acid with Ka = 3.91 106....
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Carbonates, phosphates, borates, and arsenates—except those of the ammonium ion and the alkali metals—are insoluble. They tend to just be solids and not dissolve much in water.

Write (on paper) the expression for the equilibrium constant for the reaction represented by the equation  

3Ba2+(aq)+2PO43−(aq)⇌Ba3(PO4)2(s)

The solid doesn't have a concentration, so use the number 1 in its place. Please answer the following question in the text box below. You can be brief.

Is Kc > 1,   Kc < 1,   or  Kc  ≈ 1? Explain your answer. Consider: how likely is the reverse reaction? Would you expect insoluble ionic compounds to have a high or low concentration of dissolved ions at equilibrium?

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