List 2 other sources of error that may lead to the value of K_{sp} being incorrect. Write a brief sentence outlining why the value would be affected by your chosen parameter.
a) Impurities in the sample - Contaminants in the sample can affect the solubility equilibrium and thus the K_{sp} value.
b) Incomplete dissolution - If not all of the solid dissolves in the solution, the K_{sp} value will be underestimated.
c) Presence of complexing agents - Other species in the solution can form complexes with the ions of interest, altering their solubility and affecting the K_{sp} value.
d) Experimental error in measuring concentrations - Inaccuracies in measuring concentrations of ions can lead to errors in calculating K_{sp} .