Solutions That Contain a Mixture of a Weak Acid and Its

question 36

Essay

Solutions that contain a mixture of a weak acid and its conjugate base are known to resist changes in pH.
a.Calculate the pH of 1.0 L of an aqueous solution containing 75 mmol of MES (pK_a = 6.09)and 25 mmol of its conjugate base.
b.How much of a 5.0 M NaOH solution do you need to add to raise the pH to 6.09?

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