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CBSE Class 12 · 2000 · All India · Compounds Containing NitrogenVery Short Answer

What does the K_b value for an amine stand for?

Solution

K

_{b}

measures how far the amine pulls a proton from water:

RN H_{2} + H_{2} O ⇌ RN H_{3}^{+} + O H^{-}; K_{b} = \frac{[ RN H _{3}^{+} ] [ O H ^{-} ]}{[ RN H _{2} ]}

A larger K

_{b}

(smaller pK

_{b}

) means a stronger base.

CBSE Class 12 Board · 2000 · All India · Subjective

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