Calculate the pH of KC2H3O2 solution. Ka for HC2H3O2 is 1.8x10-5

The pH value comes out to be 9.03. We will get an alkaline solution by the hydrolysis of the salt of a weak acid and a strong base.

Explanation:

 is a salt of a weak acid acetic acid and a strong base KOH. This salt will hydrolyze in water to give an alkaline solution.

Assuming concentration (C) of the salt to be 0.2 M as it is not given.

of acetic acid =

The formula of pH on hydrolysis of salt of weak acid and strong base is given below

The pH of solution comes out to be 9.03

its first and third is your answer i did the qustion the fourth isnt right