Chemistry, 20.02.2020 05:28 georgettemanga2001
What is the ratio [ A − ] / [ HA ] [A−]/[HA] at pH 2.75 ? 2.75? The p K a pKa of formic acid (methanoic acid, H − COOH ) H−COOH) is 3.75.
Answers: 2
![\frac{[A^-]}{[HA]}](/tpl/images/0516/9494/1d212.png)
is 0.1
![pH=pK_a+\log(\frac{[salt]}{[acid]})](/tpl/images/0516/9494/e4eea.png)
![pH=pK_a+\log(\frac{[A^-]}{[HA]})](/tpl/images/0516/9494/eef38.png)
= negative logarithm of acid dissociation constant of methanoic acid = 3.75![2.75=3.75+\log(\frac{[A^-]}{[HA]})\\\\\frac{[A^-]}{[HA]}=0.1](/tpl/images/0516/9494/7a290.png)
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What is the ratio [ A − ] / [ HA ] [A−]/[HA] at pH 2.75 ? 2.75? The p K a pKa of formic acid (methan...
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