Given a solution of 0.125 M CH3COOH (aq) anda solution of 0.150 M NaCH3COO (aq), how wouldyou prepare 100.0 mL of a buffer solution with a pH of 4.400?pKa = 4.740 for CH3COOH(aq).
Select one:
a. Mix 68.6 mL of the CH3COOH (aq) with 31.4mL of the NaCH3COO (aq)
b. Mix 27.6 mL of the CH3COOH (aq) with 72.4mL of the NaCH3COO (aq)
c. Mix 72.4 mL of the CH3COOH (aq) with 27.6mL of the NaCH3COO (aq)
d. Mix 50.0 mL of the CH3COOH (aq) with 50.0mL of the NaCH3COO (aq)
QUESTION 2
If 15.9 grams of NH4Cl (s) are added to250.0 mL of 0.350 M NH3 (aq) solution, what isthe resulting pH? Assume no change in volume upon adding theNH4Cl (s). pKa = 9.25 forNH3 (aq).
Select one:
a. 8.55
b. 8.38
c. 9.06
d. 8.72
