What is the correct order of leaving group ab | vedclass

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(B) The leaving group ability is inversely proportional to the basicity of the group. Weaker bases are better leaving groups.The conjugate acids of th

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$IV > III > I > II$

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(B) The leaving group ability is inversely proportional to the basicity of the group. Weaker bases are better leaving groups.The conjugate acids of the given groups are:$I. CH_3COOH$ $(pKa \approx 4.75)$$II. CH_3OH$ $(pKa \approx 15.5)$$III. CH_3SO_3H$ $(pKa \approx -1.2)$$IV. CF_3SO_3H$ $(pKa \approx -14)$Lower $pKa$ values indicate stronger conjugate acids,which means the corresponding conjugate bases are weaker and thus better leaving groups.The order of acidity is $IV > III > I > II$.Therefore,the order of leaving group ability is $IV > III > I > II$.

What is the correct order of leaving group ability for the following groups?
$I. -OAc$
$II. -OMe$
$III. -OSO_2Me$
$IV. -OSO_2CF_3$

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What is the correct order of leaving group ability for the following groups?$I. -OAc$$II. -OMe$$III. -OSO_2Me$$IV. -OSO_2CF_3$