Chemistry, 28.08.2019 03:10, jonmorton159
A0.020 m solution of niacin has a ph of 3.26. (a) what percentage of the acid is ionized in this solution
Answers: 2
![pH=-log [H+]](/tpl/images/0204/3941/a7279.png)
![3.26 = -log [H+]](/tpl/images/0204/3941/b8b1f.png)
![[H+] = 5.495\times 10^{-4} M](/tpl/images/0204/3941/5b1d5.png)
![K_a=\frac{[H+][A-]}{[HA]}](/tpl/images/0204/3941/c9423.png)
![K_a=\frac{[x][x]}{[0.020-x]}](/tpl/images/0204/3941/20ef9.png)
![K_a=\frac{[5.495\times 10^{-4}]^2}{[0.020-5.495\times 10^{-4}]}](/tpl/images/0204/3941/3796a.png)
![\frac{[H^+_eqm]}{[Acid_{initial}]}\times 100](/tpl/images/0204/3941/b38c0.png)
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A0.020 m solution of niacin has a ph of 3.26. (a) what percentage of the acid is ionized in this sol...
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