Asked by Lana
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 .)
Answers
Answered by
Mark
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)
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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