Passage III (Questions 13-18)

A student wishes to determine the solubility of Mg(OH)2 under various conditions.

Experiment I

The student dissolves some of the compound in water and finds [Mg2+] in the saturated solution to be 1.65 x 10-4.

Experiment 2

The student dissolves enough Mg(OH)2 in 0.1 M NaOH to make a saturated solution.

Experiment 3

The student prepares a saturated solution of Mg(OH)2 in 1.0 M HCl.