In order for a precipitation reaction to occur the product must be insoluble. However in an experiment we formed precipitates of two compounds, KNO3 and NaCl which are soluble? How did this occur? What was the forcing condition in each case?

Answer 1

You must have used a different solvent or the amount of solvent was too small to dissolve the amount of KNO3 and NaCl. That's about the best I can do with such a general description of what you did.