Answer to Question #87353 in General Chemistry for Michelle

Question

suppose you were asked to prepare 1.00L of a pH 5.00 CH3CO2Na/CH3CO2H buffer that must be able to resist the addition of 100.0mL of 0.200M NaOH without exceeding a pH of 5.20. The buffer must be of the lowest possible concentration. You have 1.00M acetic acid (CH3CO2H,pKa=4.76), 1.00M NaOH,and deionized water at your disposal. How would you prepare the buffer?

Answer 1

n= 1.737801 (CH3COONa)

n= 1 (CH3COOH)

V=1 L.