weak acid has a pKa of 7.58. What is the proportion of A- to HA if pH is 9.42?  Round to one decimal place Thank you!

Organic Chemistry
9th Edition
ISBN:9781305080485
Author:John E. McMurry
Publisher:John E. McMurry
Chapter20: Carboxylic Acids And Nitriles
Section20.SE: Something Extra
Problem 39AP: Calculate the Ka's for the following acids: (a) Citric acid, pKa = 3.14 (b) Tartaric acid, pKa =...
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A weak acid has a pKa of 7.58. What is the proportion of A- to HA if pH is 9.42?  Round to one decimal place

Thank you!

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