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:
![pH = pKa + log\:\dfrac{[salt]}{[acid]}](https://tex.z-dn.net/?f=%20%20pH%20%3D%20pKa%20%2B%20log%5C%3A%5Cdfrac%7B%5Bsalt%5D%7D%7B%5Bacid%5D%7D%20%20%20)





Note:. The pH <7, then we have an acidic solution.
I Hope this helps, greetings ... DexteR! =)
Answer:
aluminium is all of isotope with 14 neutrons .
The answer to the question <u>Which conclusion can be made from Gay-Lussac's law</u> is For a constant volume, the pressure of a gas is directly proportional to the temperature in Kelvin
Gay-Lussac's law shows the relationship between the pressure of a fixed mass of gas and its temperature in Kelvin.
It states that for a constant volume, the pressure of a gas is directly proportional to the temperature in Kelvin.
Mathematically, P ∝ T
P = kT


So, the answer to the question <u>Which conclusion can be made from Gay-Lussac's law</u> is For a constant volume, the pressure of a gas is directly proportional to the temperature in Kelvin
Learn more about Gay Lussac's law here:
brainly.com/question/24002551
According to the <em>Law of Conservation of Mass</em>,
The mass of the products in a chemical reaction must equal the mass of the reactants.
∴ D is the Answer