Question About Precipitation
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The solubility of a product of Ca(OH)2 is 7.9 (10^-6) at 25 C. Will a precipitate form when 100mL of 0.10 mol/L of CaCl2 solution and 50.0 mL of 0.070 mol/L of NaOH solution are combined. Please explain the procedure to this answer by showing all steps.
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The dissolution Rxn is:
Ca(OH)_2 (S) <--> Ca^+2 (aq) + 2OH- (aq)
Ksp = [OH-]^2[Ca+2]
bracket terms are an indication of concentrations - actually when you really get in to this you will be discussing activities.
Now our next assumption is that these volumes of the dissolved salts are additive. 100 mL + 50 mL ...
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