Consider two acids: cl2chco2h (dichloroacetic acid, pka = 1.3) and hco2h (formic acid, pka = 3.8). which acid has the larger ka? select the single best answer.

Explanation:

pKa is defined as the negative logarithm of Ka.

Thus,

pKa = -log Ka

Thus, larger the value of Ka, smaller is the value of pKa.

Given that:-

has a pKa = 1.3

has a pKa = 3.8

Thus, lower value of pKa has the larger Ka which is , dichloroacetic acid ( 1.3 < 3.8 ) .

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