Which of the following is the most acidic sub | vedclass

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Question

(B) The acidity of hydrocarbons depends on the hybridization of the carbon atom to which the hydrogen is attached.$sp$ hybridized carbon has $50\%$ $s

Vedclass · Accepted Answer

$HC \equiv CH$

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(B) The acidity of hydrocarbons depends on the hybridization of the carbon atom to which the hydrogen is attached.$sp$ hybridized carbon has $50\%$ $s$-character,$sp^2$ has $33.3\%$ $s$-character,and $sp^3$ has $25\%$ $s$-character.Greater $s$-character means the electrons are held more tightly by the nucleus,making the carbon more electronegative.Thus,the order of acidity is: $HC \equiv CH$ $(sp)$ > $CH_2 = CH_2$ $(sp^2)$ > $CH_3 - CH_3$ $(sp^3)$.Therefore,$HC \equiv CH$ is the most acidic among the given options.

Which of the following is the most acidic substance?

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