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Question

What is the decreasing order of strength of the bases OH,NH2,HCC and CH3CH2

A
CH3CH2>NH2>HCC>OH
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B
HCC>CH3CH2>NH2OH
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C
OH>NH2>HCC>CH3CH2
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D
NH2>HcC>OH>CH3CH2
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Solution

The correct option is A CH3CH2>NH2>HCC>OH
Conjugate base of strong acid is weak while conjugate base of weak acid is stronger.
Acidic strength of acid
HOH>CHCH>NH3>CH3CH3
Hence, order of strength of base
CH3CH2>NH2>CHC>OH

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