The pKa of phenol is 9.2. Predict which of the following pKa values given below is most consistent for the pKa of para- hydroxy benzaldehyde?

Question

The pKa of phenol is 9.2. Predict which of the following pKa values given below is most consistent for the pKa of para- hydroxy benzaldehyde? (A) 10.4 (B) 8.6 (C) 4.8 (D) Insufficient information

Tardigrade Admin · Accepted Answer

- CHO at the para position will increase acid strength hence pK a will be lowered but not as Much as to reach 4.8.

Q. The $p K_{a}$ of phenol is $9.2$ . Predict which of the following $p K_{a}$ values given below is most consistent for the $p K_{a}$ of para- hydroxy benzaldehyde?

10.4

8.6

4.8

Insufficient information

- $C H O$ at the para position will increase acid strength hence $p K_{a}$ will be lowered but not as Much as to reach $4.8$ .

Q. The pKa​ of phenol is 9.2. Predict which of the following pKa​ values given below is most consistent for the pKa​ of para- hydroxy benzaldehyde?

10.4

8.6

4.8

Insufficient information

- CHO at the para position will increase acid strength hence pKa​ will be lowered but not as Much as to reach 4.8.

Q. The $p K_{a}$ of phenol is $9.2$ . Predict which of the following $p K_{a}$ values given below is most consistent for the $p K_{a}$ of para- hydroxy benzaldehyde?

- $C H O$ at the para position will increase acid strength hence $p K_{a}$ will be lowered but not as Much as to reach $4.8$ .