Answers: 1
![pH=pK_a+\log \frac{[Salt]}{[Acid]}](/tpl/images/0073/2688/e961a.png)
![pK_a=-\log [K_a]](/tpl/images/0073/2688/2d95a.png)
=Dissociation constant
+ Conjugate base![pH=pK_a+\log \frac{[\text{conjugate base}]}{[\text{weak acid}]}](/tpl/images/0073/2688/cdc8e.png)
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