Homework Help: Chemistry

Posted by Lacy on Wednesday, February 13, 2013 at 12:40am.

You are asked to prepare a pH = 4.00 buffer starting from 1.50 L of 0.0200 M solution of benzoic acid (C6H5COOH) and some added sodium benzoate salt (C6H5COONa).
a) Find the pH of the benzoic acid solution BEFORE adding the salt.
b) Use the Henderson-Hasselbalck equation to derive how many moles of the salt you should add.
c) How many grams of the salt should you add?

Chemistry - DrBob222, Wednesday, February 13, 2013 at 12:48am
Give specific details about what youi don't understand.
Chemistry - Lacy, Wednesday, February 13, 2013 at 1:27am
I dont understand part a)
How to start the process of finding the pH
Chemistry - Lacy, Wednesday, February 13, 2013 at 1:35am
I dont understand part a)
How to start the process of finding the pH

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