Complete the mass balance expression for a saturated solution of Ag2CO3. Note at least one blank is a numeric coefficient. (Note: Ignore any subsequent reactions of Ag .)

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  1. Consider what happens to Ag2CO3 in aqueous solution. It dissociates as thus:

    Ag2CO3 --> 2Ag^+ + CO3^2-

    Now think about reactions of CO3^2- with water. The problem says to ignore Ag+ subsequent reactions.
    H2O <-> H3O^+ + OH^-
    CO3^2- + H3O^+ <-> HCO3^- + H2O
    HCO3^- + H3O^+ <-> H2CO3 + H2O

    Mass balance this to get:

    Ag^+ = 2(CO3^2- + HCO3^- + H2CO3)

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