Question

HE HCQH-O4 strongest base eg C6H30 intermediate base M reg 2rea F weakest base 2re CH,04 not a Bronsted-Lowry base is M M CGH OH

Answer 1

The Ka value for HF = 7.1 x 10^-4

The Ka value for aspirin, acetylsalicylic acid (HC₉H₇O₄) = 3.0 x 10^-4

The Ka value for phenol (C₆H₅OH) = 1.3 x 10^-10

Hence the increasing order of acidity of the molecules is HF > HC₉H₇O₄ > C₆H₅OH

Since we know that stronger the acid the weaker is its conjugate base;

• The weakest base is: F^-
• The intermediate base is: C₉H₇O₄^-  
• The strongest base is: C₆H₅O^-  

• not a Brønsted-Lowry base : HF