To make a phosphate buffer at pH 6.82 starting with one liter of 10 mM phosphoric acid (pKs are 2.15,6.82,and 12.38),you could add A)5 millimoles of HCl. B)20 millimoles of K⁺. C)25 millimoles of HCl. D)15 millimoles of KOH. E)You can't make a buffer by adding HCl or KOH.

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The Answer of To make a phosphate buffer at pH 6.82 starting with one liter of 10 mM phosphoric acid (pKs are 2.15,6.82,and 12.38),you could add A)5 millimoles of HCl. B)20 millimoles of K⁺. C)25 millimoles of HCl. D)15 millimoles of KOH. E)You can't make a buffer by adding HCl or KOH.

To Make a Phosphate Buffer at PH 6