Homework Answers
![3) Measured pH = 2.5 (given) . pH = -log [tzot] CH3COOH +HO ~ Chloo +H30+ pH = -log [tzot] - 215 z log [mt] [Ho = sentitog (-](http://img.homeworklib.com/questions/27289150-6f6a-11ea-8cc8-096c684c757a.png?x-oss-process=image/resize,w_560)
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LUULISI Part B: Determination of K. of Acetic Acid 3. Record the measured pH of vinegar...
a. Using the initial concentration of CH,COOH (from Problem 3) and the equilibrium concentration of H,0...
a. Using the initial concentration of CH,COOH (from Problem 3) and the equilibrium concentration of H,0 calculated (from Problem 4), complete the reaction table for vinegar. Ignore the column under H:O() (shaded in gray). Don't forget to write a sign (+ or -) for the "Change” row entry. (9 pts: each entry is 1 pt.) Reaction Table CH.COOH (aq) + H20(0) CH,COO (aq) + H2O (ag) Initial Change Equilibrium b. By using the concentration values at equilibrium in the reaction...
A particular sample of vinegar has a pH of 2.70. If acetic acid is the only...
A particular sample of vinegar has a pH of 2.70. If acetic acid is the only acid that vinegar contains (Ka=1.8×10−5), calculate the initial concentration of acetic acid in the vinegar. Express your answer using two significant figures.
A particular sample of vinegar has a pH of 3.10. If acetic acid is the only...
A particular sample of vinegar has a pH of 3.10. If acetic acid is the only acid that vinegar contains (Ka=1.8×10−5), calculate the initial concentration of acetic acid in the vinegar. Express your answer using two significant figures.
Vinegar is a solution of acetic acid in water. If a 145 mL bottle of distilled...
Vinegar is a solution of acetic acid in water. If a 145 mL bottle of distilled vinegar contains 34.2 mL of acetic acid, what is the volume percent (v/v) of the solution? Express your answer to three significant figures.
The concentration of acetic acid (CH3COOH) in common vinegar is close to 1M. Not all the...
The concentration of acetic acid (CH3COOH) in common vinegar is close to 1M. Not all the molecules of this acid react with water molecules and produce H3O+ ions. In fact, only around 4 per every 1000 molecules of acetic acid dissociate. Hydronium ions Homework • Unanswered Estimate the molar concentration of hydronium ions H307 in vinegar. Enter your answer using this type of scientific notation: X.XEY Numeric Answer:
PART A: A particular sample of vinegar has a pHpH of 2.95. If acetic acid is...
PART A: A particular sample of vinegar has a pHpH of 2.95. If acetic acid is the only acid that vinegar contains (Ka=1.8×10−5), calculate the concentration of acetic acid in the vinegar. Express your answer using two significant figures. PART B: A new potential heart medicine, code-named X-281, is being tested by a pharmaceutical company, Pharma-pill. As a research technician at Pharma-pill, you are told that X-281 is a monoprotic weak acid, but because of security concerns, the actual chemical...
Vinegar is simply a solution of acetic acid, HC2H3O2, in water. If 1.00 L of vinegar...
Vinegar is simply a solution of acetic acid, HC2H3O2, in water. If 1.00 L of vinegar has 50.5 g of HC2H3O2 in it, what is the molar concentration of the acid in vinegar? Express your answer to three significant figures. Answer in M HC2H3O2
3. Household vinegar is an aqueous acetic acid solution. A particular sample of vinegar has a...
3. Household vinegar is an aqueous acetic acid solution. A particular sample of vinegar has a pH of 2.90. Assuming that the vinegar contains only acetic acid (CH3COOH), with a ki of 1.8 x 10-5 at this temperature, calculate the initial concentration of acetic acid in the vinegar in units of molarity.
6.31 M 7. Molarity of acetic acid, HC2H30in vinegar sample (show your calculations) Volume of vinegar...
6.31 M 7. Molarity of acetic acid, HC2H30in vinegar sample (show your calculations) Volume of vinegar sample = 0.003L 0.003L Vinegar contain 0.01893 moles IL 0.01893 = 6.3 IM 0.003 Vinegar contain 8. Grams of Acetic Acid, HC,H,O2 (show your calculations) 1.1368 g HC2H5O2 Grams acid = 12 *MW = 0.01893 mot x 60.052 g/ mot = 1-1368 g 31.90 % L 3 100 9. Percent (m/v) of HC,H,O, in vinegar sample (show your calculations) 3.0 mL vinegar contain 0.01893...
Part A: Measuring the pH of solutions 1. Orange Juice Measured pH (2 pts) 5.0 a. Determine the concentration of hyd...
Part A: Measuring the pH of solutions 1. Orange Juice Measured pH (2 pts) 5.0 a. Determine the concentration of hydronium ions in orange juice. Show your work. (10 pts) b. Determine the concentration of hydroxide ions in orange juice. Make sure to use the raw number (= not rounded oft) from Question 1-a in order to answer this question (otherwise, full credits are not given). Then round off your answer to a correct number of significant figures at the...
a. Using the initial concentration of CH,COOH (from Problem 3) and the equilibrium concentration of H,0 calculated (from Problem 4), complete the reaction table for vinegar. Ignore the column under H:O() (shaded in gray). Don't forget to write a sign (+ or -) for the "Change” row entry. (9 pts: each entry is 1 pt.) Reaction Table CH.COOH (aq) + H20(0) CH,COO (aq) + H2O (ag) Initial Change Equilibrium b. By using the concentration values at equilibrium in the reaction...
The concentration of acetic acid (CH3COOH) in common vinegar is close to 1M. Not all the molecules of this acid react with water molecules and produce H3O+ ions. In fact, only around 4 per every 1000 molecules of acetic acid dissociate. Hydronium ions Homework • Unanswered Estimate the molar concentration of hydronium ions H307 in vinegar. Enter your answer using this type of scientific notation: X.XEY Numeric Answer:
3. Household vinegar is an aqueous acetic acid solution. A particular sample of vinegar has a pH of 2.90. Assuming that the vinegar contains only acetic acid (CH3COOH), with a ki of 1.8 x 10-5 at this temperature, calculate the initial concentration of acetic acid in the vinegar in units of molarity.
6.31 M 7. Molarity of acetic acid, HC2H30in vinegar sample (show your calculations) Volume of vinegar sample = 0.003L 0.003L Vinegar contain 0.01893 moles IL 0.01893 = 6.3 IM 0.003 Vinegar contain 8. Grams of Acetic Acid, HC,H,O2 (show your calculations) 1.1368 g HC2H5O2 Grams acid = 12 *MW = 0.01893 mot x 60.052 g/ mot = 1-1368 g 31.90 % L 3 100 9. Percent (m/v) of HC,H,O, in vinegar sample (show your calculations) 3.0 mL vinegar contain 0.01893...
Part A: Measuring the pH of solutions 1. Orange Juice Measured pH (2 pts) 5.0 a. Determine the concentration of hydronium ions in orange juice. Show your work. (10 pts) b. Determine the concentration of hydroxide ions in orange juice. Make sure to use the raw number (= not rounded oft) from Question 1-a in order to answer this question (otherwise, full credits are not given). Then round off your answer to a correct number of significant figures at the...
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