pKa of hydrazinium ion is 7.92.
In layman's terms, pKa is a measurement of an acid's strength. A strong acid will have a pKa value that is lower than 0. To be more specific, pKa is the Ka value's negative log base ten value (acid dissociation constant). How tightly a proton is retained by a Bronsted acid is how the strength of an acid is measured. The strength of the acid and its capacity to donate protons increase with decreasing pKa values.
Kb of hydrazine = 8.5 x 10 ^(-7)
pKa = ?
pKb = -log(Kb) = -log(8.5 x 10 ^(-7)) = 6.0705
14 = pKa + pKb
=> 14 - 6.0705 = pKa
=> pKa = 7.92
Therefore, pKa = 7.922
To learn more about pKa:
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