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1 A) Which of the following pairs of solutions when mixed will form a buffer solution?...

1 A) Which of the following pairs of solutions when mixed will form a buffer solution? Group of answer choices H2SO4 and Ca(OH)2 NH3 and NH4Br NaNO3 and HNO3 KOH and KNO2

B)Phosphoric acid, H3PO4, is a triprotic acid with the following Ka values:

Ka1 = 7.5 x 10-3; Ka2 = 6.2 x 10-8; Ka3 = 3.6 x 10-13

In a solution of 0.15 M H3PO4, which species will be most abundant?

H3O+

H3PO4

HPO42-

H2PO4-

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Answer #1

- Buffen solution is made by mixing weak and with its salt on weak base with its salt Therefore NH3 and NHA BD form buffer so

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