What is the Ksp for Mg(OH)2 if a saturated solution in H2O has a pH of 10.53?
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What is the Ksp for Mg(OH)2 if a saturated solution in H2O has a pH of 10.53?
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Solution Summary
Magnesium hydroxide is an insoluble hydroxide typically used as an anacid as "Milk of Magnesia." As you are learning, even the most insoluble of salts are slightly soluble. In this reaction, since some of the magnesium hydroxide dissolves, it adds hydroxide to the aqueous solution, raising the pH. Thus the pH is a direct indicator of the hydronium, and hence the hydroxide, concentration at equilibrium.
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Magnesium hydroxide is an insoluble hydroxide typically used as an anacid as "Milk of Magnesia". As you are learning, even the most insoluble of salts are slightly soluble, as a dynamic equilibrium is set up between the solid Mg(OH)2 and its ions (i.e. at equilibrium the rate at which Mg(OH)2 dissolves is just balanced by Mg2+ and OH- ions coming together to ...
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