why does a precipitate form when a drop of 0.6 M HCL is added to a...
why does a precipitate form when a drop of 0.6 M HCL is added to a solution of 0.1 M potassium iodide and 0.2 M potassium iodate?
Homework Answers
This happens due to common ion effect. Adding a common ion decreases solubility, as the reaction shifts toward the left to relieve the stress of the excess product. Adding a common ion to a dissociation reaction causes the equilibrium to shift left, toward the reactants, causing precipitation.
KIO3 -> K+IO3, common ion, Cl+K+IO3 -> KCl + IO3
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