33. From the pKa of the following acids which is the weakest acid: a. HClO2 pKa...

Question

Question

33. From the pKa of the following acids which is the weakest acid:

a. HClO2 pKa = 1.95

b. HNO2 pka = 3.34

c. HCO2H pka = 3.74

d. HClO pKa = 7.54

Answer 1

Answer #1

If Ka is large, acid is said to be strongest.

Since Ka and pKa are inversely related, strongest acid will have smallest pKa.

So, weakest acid will have largest pKa.

pKa is largest for HClO
So, this is weakest acid

Answer: d

Answer 2

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