Which of the following is the strongest Bronsted base?

A
$H^{-}$
B
${CN}^{-}$
C
${HS}^{-}$
D
${NO}_{2}^{-}$

Solution:

$H^{-}$ is the strongest base.

The base is a material that receives an H+ ion or a proton and creates the conjugate acid, according to the Bronsted-Lowry hypothesis, whereas the acid is a substance that provides an H+ ion or a proton.

Solution:

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