A commonly used electrogenerated chemiluminescence (ECL) co-reactant tripropylamine (TPrA) can be protonated in aqueous

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answerhappygod
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A commonly used electrogenerated chemiluminescence (ECL) co-reactant tripropylamine (TPrA) can be protonated in aqueous

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A commonly used electrogenerated chemiluminescence (ECL)
co-reactant tripropylamine
(TPrA) can be protonated in aqueous solution to form TPrAH+ (pKa =
10.4). The maximum ECL
of the Ru(bpy)32+/TPrA system is found from the solution buffered
at pH 7.4, in which ________%
is presented as free TPrA (i.e., unprotonated) and ___________% as
TPrAH+.
I know that the answers are 0.1% and 99.9%, just confused on how
to get to the answer.
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