At 25o c, the solubility of magnesium hydroxide mg(oh)2 in, Ask an Expert

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A buffer solution is prepared by adding 32.8 grams of sodium acetate, NaC2H3O2 to 1.00 L of 0.500 M acetic acid, CH3CO2H. Ka = 1.8 x 10-5 for acetic acid.

a. What is the pH of the buffered solution?

b. What is the pH of the buffered solution if 0.320 grams of NaOH is added?

c. What is the pH if 0.010 mole of HCl gas is bubbled into the original buffered solution?

A solution is made by dissolving 0.040 moles of the weak acid HA in water to make 1.00 L of a solution whose pH is 4.90. Calculate the Ka for the acid.

At 25o C, the solubility of magnesium hydroxide Mg(OH)2 in water is 0.00429 grams per Liter. Calculate the Ksp for the compound. [NOTE that there are two moles of OH- per mole Mg(OH)2.]

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