Calculate the ph of a buffer that is 0.225 m hc2h3o2 and 0.162 m kc2h3o2. the ka for hc2h3o2 is 1.8 ã 10-5. 4.60 9.26 4.74 4.89 9.11

The pH of the buffer solution is 4.60.

Explanation:

Concentration of acid =

Concentration of salt =

Dissociation constant =

The pH of the buffer can be determined by Henderson-Hasselbalch equation:

pH = 4.60

The pH of the buffer solution is 4.60.

4.602

Given:

A buffer system consisting of 0.225 M HC₂H₃O₂ and 0.162 M KC₂H₃O₂.

The Ka for HC₂H₃O₂ is 1.8 x 10⁻⁵.

Question:

Calculate the pH of this buffer.

The Process:

Let us first observe the ionization reaction of the KC₂H₃O₂ salt below.

To calculate the specific pH of a given buffer, we need using The Henderson-Hasselbalch equation for acidic buffers:

where,  

Thus, the pH of this buffer equal to 4.602.