2. What is the pH of a buffer that is initially 0.050 Macetic acid (Ka =...
Homework #1 10069 10-17-17 due date: 10-19-1. Calculate the pH of acetate buffer (3.0 Macetic acid and 3.0 M sodium acetate in 1.0 L) after the addition of 0.20 mol of NaOH Ka (acetic acid) = 1.8 × 10-5
What is the pH of an acetic acid/sodium acetate buffer with [CH3CO2H] = 0.850 M and [CH3CO2-] = 0.550 M? Ka for acetic acid = 1.8×10-5 pH =
CHEM107 ACID_BASE BUFFERS AND PH UNIT-25 CTO-13: You have 500.0 mL of a buffer solution containing 0.20 Macetic acid CH3COOH) and 0.30 M sodium acetate (CH3COONa). What will the pH of this solution be after the addition of 20.0 mL of 1.00 M NaOH solution? (Ka=1.8 x 10-51 1) 4.41 B) 4.74 C) 4.56 D) 4.92 E) 5.07
(C))3.75 moo (D) 4.75 (E) 5.75 bios nA oir 9. Ka of acetic acid is 1.8 x 10. What is the pH of a solution 0.1M acetic acid and 0.05M sodium acetate? (A) 4.44 oasd A (B) 4.74 (C) 4.96 (D) 5.04 (E) 5.56 10. A buffer solution containing 0.5M acetic acid and 0.5M sodium acetate hais a pH ot 4.745. 5ml 2M sodium hydroxide is added to 995ml of the buffer solution. What is final pH? (A) 4.569
(C))3.75...
4) Calculate the pH of a buffer that is 0.258 M acetic acid and 0.128 M sodium acetate Ka for acetic acid is 1.8 X 10-5
a buffer solution of pH =5.30 can be prepared by dissolving acetic acid and sodium acetate in water. How many moles of sodium acetate must be added to 1 L of 0.25 M acetic acid to prepare the buffer? Ka(CH3COOH)=1.8 x 10^-5
A buffer solution of pH 4.55 is to be prepared from acetic acid (with Ka = 1.80 x 10-5, sodium acetate and water. What must be the molar ratio of acetate ion to acetic acid in this solution to obtain this pH? Give your answer to 2 decimal places.
a) What is the pH of a solution that consist of 0.20 M ammonia, NH3, and 0.20 M ammonium choride, NH4Cl? (Kb for ammonia is 1.8 x 10-5) b) 1.25 g of benzoic acid (C6H5CO2H) and 1.25 g of sodium benzoate (NaC6H5CO2) are dissolved in enough water to make 250 mL solution. Calculate the pH of the solution using the Handerson-Hasselbach equation (Ka for benzoic acid is 6.3 x 10-5). c) What is the pH after adding 82 mg of...
Part A Consider an acetate buffer that is a mixture of 0.20 Macetic acid and 0.20 M sodium acetate. This buffer has a pH = 4.74. Calculate the change in pH after 15 mL of a 0.4 M solution of a strong base had been added to 100 mL of this buffer. O 0.222 0.158 0.043 0.087 O O 0.269
A) A buffer containing acetic acid and sodium acetate has a pH of 5.45. The Ka value for CH3CO2H is 1.80 × 10-5. What is the ratio of the concentration of CH3CO2H to CH3CO2-? [CH3CO2H]/[ CH3CO2-] = _________ B) What is the pH change when 29.6 mL of 0.117 M NaOH is added to 95.4 mL of a buffer solution consisting of 0.123 M NH3 and 0.179 M NH4Cl (Ka for ammonium ion is 5.6x10^-10.) pH change =_______