Part A) Calculate how many times more soluble Mg(OH)2Mg(OH)2 is in pure water Based on the given value of the KspK_sp, calculate the ratio of solubility of Mg(OH)2Mg(OH)2 dissolved in pure H2O to Mg(OH)2Mg(OH)2 dissolved in a 0.190 MM NaOHNaOH solution. Express your answer numerically to three significant figures.

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Part A)

Calculate how many times more soluble Mg(OH)2Mg(OH)2 is in pure water

Based on the given value of the KspK_sp, calculate the ratio of solubility of Mg(OH)2Mg(OH)2 dissolved in pure H2O to Mg(OH)2Mg(OH)2 dissolved in a 0.190 MM NaOHNaOH solution.
Express your answer numerically to three significant figures.
 
Part B)
 
What is the pHpH change of a 0.270 M solution of citric acid (pKa=4.77) if citrate is added to a concentration of 0.155 MM with no change in volume?
Express the difference in pHpH numerically to two decimal places.
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