Refer to aqueous solutions containing 1:1 mole ratios of the following pairs of

Question

Refer to aqueous solutions containing 1:1 mole ratios of the following pairs of substances. Assume all concentrations are 1M.
(A) NaHSO4 and Na2SO4 [Ka NaHSO4 = 1.3X10^-2]
(B) Na2HPO4 and Na3PO4 [Ka Na2HPO4 = 4.8x10^-13]
(C) HCl and NaCl
(D) NaOH and NH3
(E) NH3 and HC2H3O2 (acetic acid)

____ The solution with the lowest pH
____ A buffer at a pH>8
____ A buffer at a pH<6
____ The solution which is nearest neutral
____ The solution with the highest pH


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Explanation / Answer

d)

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