An aqueous solution is prepared to be 0.243 M in sodium formate and 0.120 M in...

An aqueous solution is prepared to be 0.243 M in sodium formate and 0.120 M in benzoic acid.

(1) Is this solution a buffer solution?

(2) What is the pH of this solution?

(3) If 0.124 moles of hydrobromic acid are added to one liter of this solution, what is the pH of the resulting solution?

Ka value of benzoic acid = 6.3X10^-5

Expert Solution

queen_honey_blossom answered 2 years ago

Part A: Calculate the pH of a solution that is 0.250 M in sodium formate (HCOONa)...

Part A: Calculate the pH of a solution that is 0.250 M in sodium formate (HCOONa) and 0.110 M in formic acid (HCOOH). Part B: Calculate the pH of a solution that is 0.520 M in pyridine (C5H5N) and 0.470 M in pyridinium chloride (C5H5NHCl). Part C: Calculate the pH of a solution that is made by combining 55 mL of 0.040 M hydrofluoric acid with 125 mL of 0.120 M sodium fluoride.

1. Calculate the hydronium ion concentration and pH for a 0.042 M solution of sodium formate,...

1. Calculate the hydronium ion concentration and pH for a 0.042 M solution of sodium formate, NaHCO2. Kb for reaction of HCO2- ion with water is 5.6 × 10-11. [H3O+]----------------M pH--------------------- 2. What are the equilibrium concentrations of NH3, NH4+, and OH- in a 0.42 M solution of ammonia? What is the pH of the solution? Kb = 1.8 * 10^-5 [OH-] ----------------------- M [NH4+] ----------------------M [NH3] ---------------------- M pH----------------------------

Calculate the hydronium ion concentration and pH for a 0.050 M solution of sodium formate, NaHCO2....

Calculate the hydronium ion concentration and pH for a 0.050 M solution of sodium formate, NaHCO2. Kb for reaction of HCO2- ion with water is 5.6 × 10-11. [H3O+] =_____ M pH =______

1. An aqueous solution of sodium hydroxide is standardized by titration with a 0.108 M solution...

1. An aqueous solution of sodium hydroxide is standardized by titration with a 0.108 M solution of perchloric acid. If 17.0 mL of base are required to neutralize 29.4 mL of the acid, what is the molarity of the sodium hydroxide solution? ______ M sodium hydroxide 2. An aqueous solution of potassium hydroxide is standardized by titration with a 0.130 M solution of nitric acid. If 23.3 mL of base are required to neutralize 15.8 mL of the acid, what...

calculate the pH of a .250 M sodium formate, NaCHO2 solution. SHow all work, including your...

calculate the pH of a .250 M sodium formate, NaCHO2 solution. SHow all work, including your balanced chemical equation and law of mass action.

A buffer solution that is 0.10 M sodium acetate and 0.20 M acetic acid is prepared....

A buffer solution that is 0.10 M sodium acetate and 0.20 M acetic acid is prepared. Calculate the initial pH of this solution. The Ka for CH3COOH is 1.8 x 10-5 M. As usual, report pH to 2 decimal places. A buffered solution resists a change in pH. Calculate the pH when 21.1 mL of 0.031 M HCl is added to 100.0 mL of the above buffer.

What is the pH of a 0.186 M aqueous solution of sodium fluoride, NaF? (Ka for...

What is the pH of a 0.186 M aqueous solution of sodium fluoride, NaF? (Ka for HF = 7.2×10-4)

1) What is the pH of a 0.246 M aqueous solution of sodium acetate, NaCH3COO? This...

1) What is the pH of a 0.246 M aqueous solution of sodium acetate, NaCH3COO? This solution is acidic, basic or neutral? 2) The substance benzoic acid (C6H5COOH) is a weak acid (Ka = 6.3×10-5). What is the pH of a 0.110 M aqueous solution of sodium benzoate, NaC6H5COO? This solution is acidic, basic or neutral? 3) What is the pH of a 9.17×10-2 M aqueous solution of ammonium nitrate, NH4NO3? This solution is acidic, basic or neutral?

The molality of an aqueous sodium nitrate solution is 2.81 m. What is the mole fraction...

The molality of an aqueous sodium nitrate solution is 2.81 m. What is the mole fraction of NaNO3? The molar mass of NaNO3 is 85.00 g/mol; the molar mass of water is 18.02 g/mol. 0.0506 0.239 0.00281 0.193 0.0482

Determine the [OH−] of a solution that is 0.120 M in CO32−.

Question