Multiple Choice
Calculate the ratio of the molarities of HPO42- and H2PO4- ions required to achieve buffering at pH = 7.00 .For H3PO4,PKa1 = 2.12,PKa2 = 7.21,And pKa3 = 12.68.
A) 0.81
B) 1.23
C) 0.62
D) 0.21
E) 1.62
Correct Answer:
Verified
Correct Answer:
Verified
Related Questions
Q233: The titration curve for the titration of
Q234: If the standard potential for Tl<sup>3+</sup>(aq)/Tl<sup>+</sup>(aq)
Q235: When equilibrium is reached in an electrochemical
Q236: What reaction occurs at the cathode in
Q237: A cell that uses bromine to oxidize
Q239: How many moles of Cl<sub>2</sub>(g) are
Q240: What is the equilibrium constant for
Q241: What is the concentration of acetate ion
Q242: What potential does a cell have that
Q243: When silver ions form a coordination complex