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11 Dec 2019

Determine the pH of a solution prepared by mixing 20.0 mL of 0.400 M CH3COOH with 30.0 mL of 0.200 NaCH3COO

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Sixta Kovacek
Sixta KovacekLv2
13 Dec 2019

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Related questions

Given a solution of 0.125 M CH3COOH (aq) and a solution of 0.150 M NaCH3COO (aq), how would you 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 31.4 mL of the NaCH3COO (aq)

b. Mix 27.6 mL of the CH3COOH (aq) with 72.4 mL of the NaCH3COO (aq)

c. Mix 72.4 mL of the CH3COOH (aq) with 27.6 mL of the NaCH3COO (aq)

d. Mix 50.0 mL of the CH3COOH (aq) with 50.0 mL of the NaCH3COO (aq)

QUESTION 2

If 15.9 grams of NH4Cl (s) are added to 250.0 mL of 0.350 M NH3 (aq) solution, what is the resulting pH? Assume no change in volume upon adding the NH4Cl (s). pKa = 9.25 for NH3 (aq).

Select one:

a. 8.55

b. 8.38

c. 9.06

d. 8.72


A buffer solution is prepared by mixing 35mL of 0.18M CH3COOH (acetic acid) and 25mL of 0.23M NaCH3COO (sodium acetate). Find the change in pH when 5.0mL of 0.12M of HCL is added. Please show step by step

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