Consider the titration of 25.0 mL of 0.205 MCH3COOH by 0.250 M NaOH. (CH3COOH,Ka = 1.8 x 10-5). a. Write the chemical equation for the titration b. Calculate the pH of the resulting soultion after thefollowing colume of NaoOH hase been added: 20.5 mL NaOH Consider the titration of 25.0 mL of 0.205 MCH3COOH by 0.250 M NaOH. (CH3COOH,Ka = 1.8 x 10-5). a. Write the chemical equation for the titration b. Calculate the pH of the resulting soultion after thefollowing colume of NaoOH hase been added: 20.5 mL NaOH
Explanation / Answer
a) CH3COOH +NaOH------->CH3COO- + Na+ +H2O b) you have (0.205 M x 0.025 L)=0.00513 mol acetic acid you add (0.250M x 0.0205L)= 0.00513 mol NaOH you now have a neutral solution : pH 7