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[" 33.The "K(b)" of weak base is "10^(-4...

[" 33.The "K_(b)" of weak base is "10^(-4)" .the "["salt"]" to "[" base "]],[" ratio to be maintained to keep the "P^(H)" of buffer solution "],[" as "9" is."],[[" 1) "1:4," 2) "4:2" 3) "1:10," 4) "10:1]]

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