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.) (K_a = 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? (K_a = 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 NaH₂PO₃
1.0 M H₂SO₄ and 1.0 M HCl
1.0 M NaOH and 0.50 M HCl

Expert Solution

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queen_honey_blossom answered 8 months ago

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...

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A 26.0−mL solution of 0.120 M CH3COOH is titrated with a 0.220 M KOH solution. Calculate...

A 26.0−mL solution of 0.120 M CH3COOH is titrated with a 0.220 M KOH solution. Calculate the pH after the following additions of the KOH solution: (a) 0.00 mL (b) 5.00 mL

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A 100.0 ml buffer solution is 0.20 M HC7H5O2 and 0.15 M NaC7H5O2. Calculate the pH of the solution after the addition of 0.0025 moles of NaOH. Assume the volume of the buffer does not change. (HC7H5O2 = Ka 6.5x10^-5)

A solution is prepared by mixing 150.0 mL of 0.200 M Mg2+ and 250.0 mL of...

A solution is prepared by mixing 150.0 mL of 0.200 M Mg2+ and 250.0 mL of 0.100 M F-. A precipitate forms. Calculate the concentrations of Mg2+ and F- at equilibrium. Ksp = 6.4 × 10-9

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?

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

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You mix a 150.0 −mL sample of a solution that is 0.0140 M in NiCl2 with...

You mix a 150.0 −mL sample of a solution that is 0.0140 M in NiCl2 with a 175.0 −mL sample of a solution that is 0.500 M in NH3. After the solution reaches equilibrium, what concentration of Ni2+(aq) remains? The value of Kf for Ni(NH3)62+ is 2.0×108.

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