To make a phosphate buffer at ph 12.38

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Reference no: EM13848321

To make a phosphate buffer at pH 12.38 starting with one liter of 10mM phosphoric acid (H3PO4; pKs are of 2.15, 6.82, and 12.38), you could add:

a) 15 millimoles of KOH

b) 20 millimoles of HCL

c) You cannot make a buffer by adding HCL or KOH

d) 25 millimoles of HCL

e) 25 millimoles of KOH

Reference no: EM13848321

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