How would you make 1L of 0.5M total strength phosphate buffer (pKas are 2.1, 7.2, 12.7) at pH = 8 using any ONE member of the phosphoric acid system and HCl? Please answer the following questions in the text box. A) Which member of the phosphoric acid system would you choose? How many moles would be needed? B) How many moles of HCl would be needed? C) Why you can use HCl instead of a phosphate system acid?
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1. How would you make 1L of 0.5M total strength phosphate buffer (pKas are 2.1, 7.2, 12.7) at pH = 8 using any ONE member of the phosphoric acid system and HCl? Please answer the following questions in the text box.
A) Which member of the phosphoric acid system would you choose? How many moles would be needed?
B) How many moles of HCl would be needed?
C) Why you can use HCl instead of a phosphate system acid?
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