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NEET levelSingle correct optionDifficulty 1 of 3g2061

Which of the following is the strongest base?

A $OH X^{-}$
B $CH X_{3} O X^{-}$
C $Cl X^{-}$
D $H X^{-}$

Answer: D

The conjugate acids have pKa values:

H X_{2}

about 35,

H X_{2} O

15.7,

CH X_{3} OH

about 15.5,

HCl

about

- 7

. The weaker the conjugate acid, the stronger the base, so hydride is strongest.

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