Short Answer
To simulate the pH of blood, which is 7.4, an undergraduate researcher in a biology lab produced a buffer solution by dissolving sodium dihydrogen phosphate (Ka = 6.2 10-8) and sodium hydrogen phosphate (Ka = 3.6 10-13) together in an aqueous solution. What mole ratio of Na2HPO4/NaH2PO4 did she need to use?
Correct Answer:

Verified
Correct Answer:
Verified
Q9: Which one, A-D, is not related to
Q16: Which combination of solutions is the best
Q39: A solution of hydrochloric acid (HCl, 25.00
Q45: If 500 mL of a solution containing
Q72: Research with biochemical systems commonly requires buffers
Q83: Which of the following groups, A-D, consist
Q102: When [H<sup>+</sup>] = 4.0 *10<sup>-</sup><sup>9</sup> M in
Q127: Purveyors of salts from the Dead Sea
Q129: Which one of the following salts forms
Q176: A 25.0 mL solution of quinine was