Chemistry Help???

Question

Calculate the pH of a solution made by mixing 0.20 mol HC2H3O2 (Ka=1.8*10^(-5)) with 0.030 mol NaOH in 1.0 L of aqueous solution.

Answer 1

Step 1:

The initial amount of [HC₂H₃O₂] is 0.2 mol.

The initial amount of [NaOH] is 0.03 mol.

The chemical equation is .

Initial Amount
Change in Amount
Equilibrium amount

Step 2:

Concentration of [HC₂H₃O₂] is .

Concentration of [NaC₂H₃O₂] is .

Definition of pH:

of acetic acid is .

pH of the solution is 4.0162.

Solution:

pH of the solution is 4.0162.