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(A) The acidic strength of a compound is directly proportional to the stability of its conjugate base.$(I)$ Cyclohexanol forms a cyclohexoxide ion $(C

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$II < I < III$

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(A) The acidic strength of a compound is directly proportional to the stability of its conjugate base.$(I)$ Cyclohexanol forms a cyclohexoxide ion $(C_6H_{11}O^-)$.$(II)$ Cyclohexylamine forms a cyclohexylamide ion $(C_6H_{11}NH^-)$.$(III)$ Phenol forms a phenoxide ion $(C_6H_5O^-)$,which is resonance-stabilized.Comparing the stability of conjugate bases:$C_6H_{11}NH^-$ is the least stable because nitrogen is less electronegative than oxygen.$C_6H_{11}O^-$ is more stable than $C_6H_{11}NH^-$.$C_6H_5O^-$ is the most stable due to resonance stabilization.Therefore,the order of increasing acidity is: $II < I < III$.

Rank the following compounds in the order of increasing acidity:
$(I)$ Cyclohexanol
$(II)$ Cyclohexylamine
$(III)$ Phenol

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Rank the following compounds in the order of increasing acidity:$(I)$ Cyclohexanol$(II)$ Cyclohexylamine$(III)$ Phenol