Question

Calculate the K_a's for the following acids:

(a) Citric acid, pKa = 3.14

(b) Tartaric acid, pKa = 2.98

Short answer

Thevalue of K_a for citric and tartaric acid were calculated.

Step-by-step solution

Calculation the value of Ka for citric acid

The formula can be denoted as,

$\begin{array}{c}p{K}_a=-\log K_a\\ K_a={10}^{-pKa}\\ K_a={10}^{-3}.14\\ K_a=7.2\times {10}^{-4}\end{array}$

The K_a of citric acid is with pK_a is$7.2\times {10}^{-4}.$

Calculation the value of Ka for tartaric acid

The formula can be denoted as,

$\begin{array}{c}p{K}_a=-\log K_a\\ K_a={10}^{-pKa}\\ K_a={10}^{-2}.98\\ K_a=1\times {10}^{-3}\end{array}$

The K_a of tartaric acid is with pK_a is$1\times {10}^{-3}.$