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Question

Question: Which of the following acids has the smallest dissociation constant...

Which of the following acids has the smallest dissociation constant

A

CH3CHFCOOH\mathrm { CH } _ { 3 } \mathrm { CHFCOOH }

B

FCH2CH2COOH\mathrm { FCH } _ { 2 } \mathrm { CH } _ { 2 } \mathrm { COOH }

C

BrCH2CH2COOH\mathrm { BrCH } _ { 2 } \mathrm { CH } _ { 2 } \mathrm { COOH }

D

CH3CHBrCOOH\mathrm { CH } _ { 3 } \mathrm { CHBrCOOH }

Answer

CH3CHBrCOOH\mathrm { CH } _ { 3 } \mathrm { CHBrCOOH }

Explanation

Solution

CH3CH2NO2+H2OH2SO4\mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { NO } _ { 2 } + \mathrm { H } _ { 2 } \mathrm { O } \xrightarrow { \mathrm { H } _ { 2 } \mathrm { SO } _ { 4 } }

CH3COOH+NH2OH\mathrm { CH } _ { 3 } \mathrm { COOH } + \mathrm { NH } _ { 2 } \mathrm { OH }