calculate the buffer capacity of an acetate buffer made with 50mL 0.4M acetic acid and 0.4M sodium acetate. it's initial pH was 4.67 and adding 0.2M of NaOH to a 20mL sample of the acetate buffer. then find the buffer capacity when adding 0.2M HCl to a 20mL sample of the acetate buffer.
calculate the buffer capacity of an acetate buffer made with 50mL 0.4M acetic acid and 0.4M...
1- Calculate the PH of a buffer made by mixing 20ML of .125M acetic acid with 30ML of .100M sodium acetate 2- calculate the equivalence point from a titration of .30ML of .125 M acetic acid with 1.00 M NaOH
What is the pH of a buffer solution made of 50.0mL 1.00M acetic acid and 50.0 mL 1.0M sodium acetate? What is the pH of 50mL of this buffer solution + 2.0mL 1.0M NaOH? What is the pH of 50mL of this buffer solution + 2.0mL distilled water?
A buffer solution is 0.78 M in acetic acid and 0.22 M in sodium acetate. Calculate the solution pH after adding 0.80 g of solid NaOH to 100.0 mL of the buffer solution. Ka of acetic acid is 1.8 10−5 . Assume negligible volume change.
You have made 1.5 L of buffer by adding just acetic acid and no acetate to a final concentration of 0.300 M. However, you just adjusted the pH of the solution by adding NaOH to a pH of 4.5. The Ka of acetic acid is 1.7*10^-5. What are the new concentrations of acetic acid and acetate?
Prepare 100mL of a 0.2M acetate buffer solution of pH =4.76 (using 17.6N acetic acid and sodium acetate). a. Calculate the volume of acetic acid and weight of sodium acetate necessary to prepare the buffer solution. pKa of acetic acid is 4.76
38) A buffer is made that contains 0.50M acetic acid and 0.50M sodium acetate. To a 10o.0mL sample f the buffer 50.0 mL of 0.50M NaOH is added. What is the pH of the new solution? (K, 1.8x 10 for acetic acid) a) 5.11 b) 5.22 c) 5.33 d) 5.44 e) 5.55
For a buffer made from sodium acetate and acetic acid, the Ka of acetic acid is 1.8E-5. What mass of sodium acetate (NaCH3CO2) must be added to 2.50 L of 0.68 M acetic acid to make a buffer solution with pH = 5.75? The answer should be in two significant figures.
D. Buffers 1. A buffer solution was made by dissolving 10.0 grams of sodium acetate in 200.0 mL of 1.50 M acetic acid. Assuming the change in volume when the sodium acetate is added is not significant, estimate the pH of the acetic acid/sodium acetate buffer solution. The K, for acetic acid is 1.8 x 105. 2. Calculate the pH of a buffer solution that initially consists of 0.0400 moles of ammonia and 0.0250 moles of ammonium ion, after 20.0...
Calculate the thoeretical pH of Solution B (10mL of 0.2M acetic acid and 10 mL of 0.1M sodium hydroxide). Then calculate the theoretical pH after an addition of 1 mL of 0.0992M of HCl. Initial pH: 4.66, pH after addition of acid: 4.66 Calculate the theoretical pH of solution B (10 mL of 0.2M sodium acetate and 10 mL of 0.1M HCl). Then calculate the theoretical pH after an additon of 1 mL of 0.997M of NaOH. Initial pH: 4.81,...
DATA AND CALCULATION Preparation and Base Buffer Capacity of Buffer A Mass of sodium acetate used 0.3730g Actual pH of the buffer 5.27 Volume of the buffer used in buffer capacity titration 20.0 mL Volume (mL) of standardized NaOH used to change the pH by 1 unit 17.5 mL Concentration of standardized NaOH 0.100M Moles of NaOH needed to change the pH by 1 unit for the buffer 0.00095 mol The buffer capacity as moles of base per Liter buffer...