Chemistry Practice Problems Ka and Kb Practice Problems Solution: Given the following pKa values, which is the stron...

Solution: Given the following pKa values, which is the strongest acid of those listed in the answers?HClO2 (pKa = 2.00)CCl3COOH (pKa = 0.52)HIO3 (pKa = 0.77)HBrO2 (pKa = 4.69)HN3 (pKa = 4.72)a. HBrO2 b. HN3c. CCl3COOHd. HIO3e. HClO2

Problem

Given the following pKa values, which is the strongest acid of those listed in the answers?

HClO2 (pKa = 2.00)

CCl3COOH (pKa = 0.52)

HIO3 (pKa = 0.77)

HBrO2 (pKa = 4.69)

HN3 (pKa = 4.72)

a. HBrO2 
b. HN3
c. CCl3COOH
d. HIO3
e. HClO2

Solution

We're being asked to identify the strongest acid based on the given pK values.

Ka represents the acid dissociation constant and it measures the strength of weak acids. In general:

• The higher the Ka the stronger the acid and the greater the concentration of H+

Ka is the negative base-10 logarithm of the base dissociation constant (Ka) of a solution.

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