A diprotic acid. H2A. has the following ionization
Chapter 17, Problem 19QP(choose chapter or problem)
A diprotic acid, \(\mathrm{H}_2 \mathrm{~A}\), has the following ionization constants: \(K_{\mathrm{a}_1}=1.1 \times 10^{-3}\) and \(K_{\mathrm{a}_2}=2.5 \times 10^{-6}\). To make up a buffer solution of \(\mathrm{pH} 5.80\), which combination would you choose: \(\mathrm{NaHA} / \mathrm{H}_2 \mathrm{~A}\) or \(\mathrm{Na}_2 \mathrm{~A} / \mathrm{NaHA}\) ?
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