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Chapter 20: Q39P (page 678)

Calculate the K_a's for the following acids:
(a) Citric acid, pKa = 3.14
(b) Tartaric acid, pKa = 2.98

Short Answer

Expert verified

Thevalue of K_a for citric and tartaric acid were calculated.

Step by step solution

01

Calculation the value of Ka for citric acid

The formula can be denoted as,

$\begin{matrix} p K_{a} = - \log K_{a} \\ K_{a} = 10^{- p K a} \\ K_{a} = 10^{- 3} . 14 \\ K_{a} = 7.2 脳 10^{- 4} \end{matrix}$

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

02

Calculation the value of Ka for tartaric acid

The formula can be denoted as,

$\begin{matrix} p K_{a} = - \log K_{a} \\ K_{a} = 10^{- p K a} \\ K_{a} = 10^{- 2} . 98 \\ K_{a} = 1 脳 10^{- 3} \end{matrix}$

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

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