When sodium chloride is added to a saturated solution of lead(II) chloride, some of the lead(II) chloride precipitates. This phenomenon is called a. deionization. b. the common-ion effect. c. selective precipitation. d. supersaturation. e. a solubility anomaly.
Explanation: because the saturated ionic compound (the lead II chloride) precipitated when a soluble compound (sodium chloride) was added. The solutions had an ion in common causing one to precipitate. Therefore it is b.
