Which one of the following solutions has the lowest pH? A. a 0.1 M solution of...
Which one of the following solutions has the lowest pH?
- A.
a 0.1 M solution of formic acid, HCOOH (Ka = 1.8 x 10-4)
- B.
a 0.1 M solution of ammonium chloride, NH4Cl(s) (Ka (NH4+) = 5.6 x 10-10)
- C.
a 0.01 M solution of acetic acid, CH3COOH (Ka = 1.8 x 10-5)
- D.
a 0.01 M solution of formic acid, HCOOH (Ka = 1.8 x 10-4)
- E.
a 0.1 M solution of acetic acid, CH3COOH (Ka = 1.8 x 10-5)
Homework Answers
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Which one of the following solutions has the lowest pH?
A.
a 0.1 M solution of...
Calculate the pH of a solution made by adding 42 g of sodium acetate, NaCH3COO, to...
Calculate the pH of a solution made by adding 42 g of sodium acetate, NaCH3COO, to 22 g of acetic acid, CH3COOH, and dissolving in water to make 300. mL of solution. Hint given in feedback. The K, for CH3COOH is 1.8 x 10-5 M. As usual, report pH to 2 decimal places. Answer: Calculate the pH of a solution made by adding 59 g of sodium acetate, NaCH3COO, to 22 g of acetic acid, CH3COOH, and dissolving in water...
Calculate the equilibrium concentrations of all chemical species present in a 0.10 M H CO.(aq) solution....
Calculate the equilibrium concentrations of all chemical species present in a 0.10 M H CO.(aq) solution. What is the percent ionization of the acid and resulting pH? Units Units [H2CO3) = Number [HCO3) = Number [CO32) = Number [H30+) = Number Units Units % ionization = Number pH = Number Ka Acid Acetic Ammonium Formula CH3COOH NH4+ H3B03 1.8 x 10-5 5.6 x 10-10 5.4 x 10-10 Boric Carbonic H2CO3 Chlorous Formic Hydrocyanic Perchloric HCIO2 HCOOH HCN HC104 4.5 x...
Question 4 2 pts If 11 drops of a formic acid (HCOOH) solution are titrated with 10 drops of a 0.12 M NaOH solution, what is the percent ionization of the formic acid solution? (Ka for formic aci...
Question 4 2 pts If 11 drops of a formic acid (HCOOH) solution are titrated with 10 drops of a 0.12 M NaOH solution, what is the percent ionization of the formic acid solution? (Ka for formic acid 1.78 x 104) 4.0% 1.3% 1.9% @ 2.5% Question 5 2 pts What is the pH of an acetic acid solution if 25 drops are titrated with 44 drops of a 0.45 M KOH solution? (K, for acetic acid 1.8 x 105)...
Sort the following 0.1 M solutions in order of increasing pH ? ? NaCl ? NH4Cl...
Sort the following 0.1 M solutions in order of increasing pH ? ? NaCl ? NH4Cl ? NaNO2 ? NaCN Ka(HCN) = 6.2 x 10-10 ? Ka(HNO2) = 7.2 x 10-4 ? Kb(NH3) = 1.8 x 10-5
1. Calculate the pH of the following solutions: (pH = -log (H*]) (a) 0.050 M formic...
1. Calculate the pH of the following solutions: (pH = -log (H*]) (a) 0.050 M formic acid, HCOOH, K=1.78x10-4 (b) 0.050 M hydrocyanic acid, K.-4.8x10-10 2. How would you make a 0.00025 M solution of HCI starting with 12 M solution of HCI? 3. Does the Ka for acetic acid change (within experimental tolerance) with changes in concentration? 4. What is Le Chatelier's principle? 5. What effect does the addition of acetate ions to a solution of acetic acid have...
a) What is the pH of a solution that consist of 0.20 M ammonia, NH3, and...
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...
Rank the following solutions in order of increasing pH. Consider the following data on some weak...
Rank the following solutions in order of increasing pH.
Consider the following data on some weak acids and weak bases: - Ka Ko acid name formula nitrous acid HNO2 4.5*10-4 base name formula methylamine CH3NH2 4.4 x 10-4 acetic acid HCH,CO2 1.8 x 10-5 aniline CH3NH2 4.3 * 10-10 Use this data to rank the following solutions in order of increasing pH. In other words, select a 'l' next to the so the solution that will have the next lowest...
Calculate the pH of a solution containing formic acid, 0.50 M HCOOH, and sodium format, 0.35...
Calculate the pH of a solution containing formic acid, 0.50 M HCOOH, and sodium format, 0.35 M NaCOOH (Ka (HCOOH) = 1.8 x 10-4)
Calculate the pH of the following solutions 1. A solution that is 6.0×10−2 M in potassium...
Calculate the pH of the following solutions 1. A solution that is 6.0×10−2 M in potassium propionate (C2H5COOK or KC3H5O2 ) and 8.5×10−2 M in propionic acid (C2H5COOH or HC3H5O2 ). The Ka of propionic acid is 1.3×10-5. 2. A solution that is 8.0×10−2 M in trimethylamine, (CH3)3N, and 0.12 M in trimethylammonium chloride, (CH3)3NHCl. The Kb of trimethylamine is 6.4×10-5. 3. A solution that is made by mixing 50.0 mL of 0.16 M acetic acid and 50.0 mL of...
which acid has the greatest acid strength acetic acid, CH3COOH, Ka=1.8 x 10^-5 formic acid, HCOOH,...
which acid has the greatest acid strength acetic acid, CH3COOH, Ka=1.8 x 10^-5 formic acid, HCOOH, Ka = 1.8 x 10^-4 hydrofluoric acid, HF, Ka = 7.2 x 10^-4 hypobroumous, HOBr, Ka = 2 x 10^-9
Calculate the pH of a solution made by adding 42 g of sodium acetate, NaCH3COO, to 22 g of acetic acid, CH3COOH, and dissolving in water to make 300. mL of solution. Hint given in feedback. The K, for CH3COOH is 1.8 x 10-5 M. As usual, report pH to 2 decimal places. Answer: Calculate the pH of a solution made by adding 59 g of sodium acetate, NaCH3COO, to 22 g of acetic acid, CH3COOH, and dissolving in water...
Calculate the equilibrium concentrations of all chemical species present in a 0.10 M H CO.(aq) solution. What is the percent ionization of the acid and resulting pH? Units Units [H2CO3) = Number [HCO3) = Number [CO32) = Number [H30+) = Number Units Units % ionization = Number pH = Number Ka Acid Acetic Ammonium Formula CH3COOH NH4+ H3B03 1.8 x 10-5 5.6 x 10-10 5.4 x 10-10 Boric Carbonic H2CO3 Chlorous Formic Hydrocyanic Perchloric HCIO2 HCOOH HCN HC104 4.5 x...
Question 4 2 pts If 11 drops of a formic acid (HCOOH) solution are titrated with 10 drops of a 0.12 M NaOH solution, what is the percent ionization of the formic acid solution? (Ka for formic acid 1.78 x 104) 4.0% 1.3% 1.9% @ 2.5% Question 5 2 pts What is the pH of an acetic acid solution if 25 drops are titrated with 44 drops of a 0.45 M KOH solution? (K, for acetic acid 1.8 x 105)...
1. Calculate the pH of the following solutions: (pH = -log (H*]) (a) 0.050 M formic acid, HCOOH, K=1.78x10-4 (b) 0.050 M hydrocyanic acid, K.-4.8x10-10 2. How would you make a 0.00025 M solution of HCI starting with 12 M solution of HCI? 3. Does the Ka for acetic acid change (within experimental tolerance) with changes in concentration? 4. What is Le Chatelier's principle? 5. What effect does the addition of acetate ions to a solution of acetic acid have...
Rank the following solutions in order of increasing pH.
Consider the following data on some weak acids and weak bases: - Ka Ko acid name formula nitrous acid HNO2 4.5*10-4 base name formula methylamine CH3NH2 4.4 x 10-4 acetic acid HCH,CO2 1.8 x 10-5 aniline CH3NH2 4.3 * 10-10 Use this data to rank the following solutions in order of increasing pH. In other words, select a 'l' next to the so the solution that will have the next lowest...
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