The pH of the solution is 4.16.
What is pH?
pH is a numerical indicator of how acidic or basic aqueous or other liquid solutions are. The phrase, which is frequently used in chemistry, biology, and agronomy, converts the hydrogen ion concentration, which typically ranges between 1 and 10⁻¹⁴ gram-equivalents per liter, into numbers between 0 and 14.
Given,
Concentration of propanoic acid = 0.45 M
Concentration of potassium salt = 0.086 M
Now, Kₐ of propanoic acid = 1.3 × 10⁻⁵
∴ pKₙ = -log (1.3 × 10⁻⁵)
= 4.886
Using Henderson-Hasselbalch equation
pH = pKₐ + log [salt]/[acid]
= 4.886 + log(0.086)/(0.45)
=4.16
pH= 4.16.
To know more about pH, check out
https://brainly.com/question/172153
#SPJ4
