For the following carboxylic acids, (i) F3CCOOH (ii) CH3COOH (iii) C6H5COOH (iv) CH3CH2COOH The correct order of pKa values is

Question

For the following carboxylic acids, (i) F3CCOOH (ii) CH3COOH (iii) C6H5COOH (iv) CH3CH2COOH The correct order of pKa values is (A) I > iii > ii > iv (B) iv > ii > iii > i (C) iv > iii > ii > i (D) I > ii > iv > iii

Tardigrade Admin · Accepted Answer

As we know that stronger the acid, lower the value of pKa . Hence the correct order of pK a value is- 4 >2 >3 >1

Q. For the following carboxylic acids,
(i) $F_{3} CCOO H$ (ii) $C H_{3} COO H$ (iii) $C_{6} H_{5} COO H$ (iv) $C H_{3} C H_{2} COO H$
The correct order of $p K_{a}$ values is

I > iii > ii > iv

iv > ii > iii > i

iv > iii > ii > i

I > ii > iv > iii

As we know that stronger the acid, lower the value of $p K_{a}$ .
Hence the correct order of $p K_{a}$ value is- $4 > 2 > 3 > 1$

Q. For the following carboxylic acids, (i) F3​CCOOH (ii) CH3​COOH (iii) C6​H5​COOH (iv) CH3​CH2​COOH The correct order of pKa​ values is