Calculate the ph of a solution that is 0.235m benzoic acid and 0.130m sodium benzoate, a salt whose anion is the conjugate base of benzoic acid.

Hello!

We have the following data:

ps: we apply Ka in benzoic acid to the solution.

[acid] = 0.235 M (mol/L)

[salt] = 0.130 M (mol/L)

pKa (acetic acid buffer) =?

pH of a buffer =?

Let us first find pKa of benzoic acid, knowing that Ka (benzoic acid) =

So:

Now, using the abovementioned data for the pH formula of a buffer solution or (Henderson-Hasselbalch equation), we have:

Note:. The pH <7, then we have an acidic solution.

I Hope this helps, greetings ... DexteR! =)

the product of the pressure and volume is also constant

they are made of gases.

they have a spherical shape.

they make energy through fusion.