. 25.5 g of NaCH3COO is added to a solution of 0.550M CH3COOH to a final...

. 25.5 g of NaCH3COO is added to a solution of 0.550M CH3COOH to a final volume of 500 mL4

. a. What is the pH? Ka = 1.8 x 10-5

b. What happens to the pH of the buffer above when 0.015 moles of OH- are added (no change in volume)?

c. What happens to the pH of the buffer above when 0.025 moles of HCl are added?

Expert Solution

queen_honey_blossom answered 11 months ago

CH3COOH yields CH3COO- + H+ If NaCH3COO is added to the solution then… Will the concentration...

CH3COOH yields CH3COO- + H+ If NaCH3COO is added to the solution then… Will the concentration of H+ will increase/decrease/same? Why? Will the concentration of CH3COOH will increase/decrease/same? Why? Will the concentration of OH- will increase/decrease/same? Why? Will pKa will increase/decrease/same? Why?

Given a solution of 0.125 M CH3COOH (aq) and a solution of 0.150 M NaCH3COO (aq),...

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...

Calculate the grams of NaCH3COO required for 150.0 mL of 0.20 M CH3COOH solution to achieve...

Calculate the grams of NaCH3COO required for 150.0 mL of 0.20 M CH3COOH solution to achieve a pH of 4.40. (Assume no volume change.) (Ka = 1.8 x 10-5 ) What is the pH of 100.0 mL of buffer consisting of 0.20 M CH3COOH/0.20 M NaCH3COOafter 15.0 mL of 0.25 M HCl was added into the solution? (Ka = 1.8 x 10-5) Are the following solutions reasonable buffers? Please provide an explanation for each answer. 1.0 M H3PO4 and 1.0 M...

Calculate the pH of a solution made by adding 54 g of sodium acetate, NaCH3COO, to...

Calculate the pH of a solution made by adding 54 g of sodium acetate, NaCH3COO, to 12 g of acetic acid, CH3COOH, and dissolving in water to make 400. mL of solution.

(alkalinity) You added 10.6 g of Na2CO3 and 12 g of acetic acid (CH3COOH) to 1...

(alkalinity) You added 10.6 g of Na2CO3 and 12 g of acetic acid (CH3COOH) to 1 L water. Write all species that are present in water assuming complete dissociation. Calculate the concentration of each species in moles/L. What is the change in alkalinity of the solution? (hints: use alkalinity equation).

1. A buffer is made by adding 0.150 mol of CH3COOH and 0.250 mol of NaCH3COO...

1. A buffer is made by adding 0.150 mol of CH3COOH and 0.250 mol of NaCH3COO to enough water to make 1.00 L of solution. a. Calculate the pH of the buffer solution. b. Calculate the pH of this solution after 35.0 mL of 0.50M NaOH is added to the buffer solution. c. Calculate the pH of this solution after 35.0 mL of 5.0 M NaOH is added to the buffer solution.

3. Calculate the pH of a buffer solution made by adding 25.5 g of NaCH3CO2 (MW:82.034g/mol),...

3. Calculate the pH of a buffer solution made by adding 25.5 g of NaCH3CO2 (MW:82.034g/mol), and 0.550M HCH3CO2 (Ka=1.8x10-5) to make 500 mL of the buffer. a. Identify the acid and the base (write the formula and the ID next to it) b. Will Na+ affect the pH of the solution? Why? c. What is your prediction for the calculated pH compared to the pKa of the sample? Why? d. What is the pH of the solution? Was your...

Would NaHCO3+CH3COOH->H2CO3+NaCH3COO be a viable alternate to the reaction used to inflate an automobiles airbag?

When an aqueous solution of 7.00 g of BaCl2 was added to an aqueous solution of...

When an aqueous solution of 7.00 g of BaCl2 was added to an aqueous solution of 5.25 g of K2SO4, a white precipitate formed. After filtering and drying the precipitate, 6.85 g of BaSO4 powder was obtained. BaCl2 (aq) + K2SO4(aq) BaSO4(s) + 2 KCl (aq) What is the theoretical yield of BaSO4? SHOW ALL WORK. What is the percent yield of BaSO4? SHOW ALL WORK In determining the concentration of a sulfuric acid solution, 32.63 mL of a 0.100...

Data Table 2: Moles of CH3COOH Reaction # Volume of CH3COOH (mL) Mass of CH3COOH (g)...

Data Table 2: Moles of CH3COOH Reaction # Volume of CH3COOH (mL) Mass of CH3COOH (g) Moles of CH3COOH 1 2 3 4 5 6 how do i convert to ml?

Question