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4.5e Question 1 Question 2 We now know the moles of hydroxide used in the titration....
4.5e Question 1
Question 2
We now know the moles of hydroxide used in the titration. But, remember that, of the 100 mL of solution made from the ashes, only 20 mL were used for the titration. What is the total amount of hydroxide produced by the ashes? Volume HCl used: 5.44 mlL Concentration HCI solution 0.10 M 5.44x 10 mol HCl used 5.44 x 104 mol OH in 20 ml. solution mol OH A 1.527-g sample of an unknown...
QUESTION 1 Minnie Mouse did the Ka by Titrimetry experiment last week. Minnie used 28.63 mL...
QUESTION 1 Minnie Mouse did the Ka by Titrimetry experiment last week. Minnie used 28.63 mL of 0.136 M sodium hydroxide to reach the equivalence point when she titrated 0.3062 g of an unknown monoprotic acid. What is the number of moles of acid that were used? QUESTION 2 The Iron in a sample of iron ore can be converted completely to Fe2+ in aqueous solution, and this solution can then be titrated with KMnO4, as shown: MnO4(q) + 6...
0.3931 0.34:1 12:1 D Question 5 5 pts A 25.0 mL sample of 0.150 M hydrofluoric...
0.3931 0.34:1 12:1 D Question 5 5 pts A 25.0 mL sample of 0.150 M hydrofluoric acid is titrated with a 0.150 M NaOH solution. What is the concentration of [F 1. Kb.[OH formed from the weak base ionization, and pH at the equivalence point? The K, of hydrofluoric acid is 3.5 x 10 In the space below enter your numerical answers in order of 1 to 4 include units. 1- Molarity of the Fluoride ion formed 2. The numerical...
Acid / Base Titrations: Pre-Laboratory Assignment 1. Give at least two characteristics desirable in a primary...
Acid / Base Titrations: Pre-Laboratory Assignment 1. Give at least two characteristics desirable in a primary standard. 2. Define equivalence point and bitration end point. Do these two points in a titration occur when the same volume of titrant has been added? Explain. 3. A student standardized a NaOH solution using KHC.H.O.. Three different KHC.H.O. samples were dissolved in water and titrated with the same NaOH solution, each to a phenolphthalein end point. The pertinent reaction is: KHC3H404(aq) + NaOH(...
QUESTION 4 4 points (Extra Credit) Save Answer Bonus question: Kemmi Major is working on a...
QUESTION 4 4 points (Extra Credit) Save Answer Bonus question: Kemmi Major is working on a professor's research project. She uses a back-titration technique to determine if her reaction has formed the maximum amount of product. Back-titration works by reacting the species of interest (S) with an excess of the first chemical (A), resulting in complete reaction of the species of interest and some left-over first chemical. Then a second chemical (B) is titrated into the mixture to react with...
i need help with questions for part b only please ZULU Acid-Base Titration (worksheet to be...
i need help with questions for part b only please
ZULU Acid-Base Titration (worksheet to be completed in pairs - dee via e-mail Thursday, April 2, 11:59 pm) Concentration of NaOH: 0.0993 mol/L Part A: The following data was obtained when a 20.00 mL sample of acetic acid was titrated with 0.0993 mol/L sodium hydroxide (NaOH). The indicator changed color when 18.90 mL of NAOH was added (highlighted below). pH pH Volume of Base (mL) 1.00 2.00 Volume of Base...
5. To make a saturated aqueous solution of ammonia, 470 g of ammonia are dissolved with...
5. To make a saturated aqueous solution of ammonia, 470 g of ammonia are dissolved with one liter of water. The density of the resulting solution is 0.89 g/mL. What is the molarity of the solution? Hint: Think about the two quantities you need to calculate the molarity of a solution, then figure out how to get those two quantities from the information supplied in the problem, so that you can calculate the molarity. 6. You found a 1 pound...
..ll GoSmart 9:18 PM 7 73% Х CHM 103 Lab 3 Acid Base... + U Experiment...
..ll GoSmart 9:18 PM 7 73% Х CHM 103 Lab 3 Acid Base... + U Experiment 3 ACIDS AND BASES: ANALYSIS Learning Objectives Upon completion of this experiment, Mudents will have experienced 1. The determination of the percent by mass of acetic acid in vinegar 2. The determination of the molecular mass of an unknown acid Text Toples Acids and buses, indicators, titrations Notes to Students and Instructor The solution of sodium hydroxide prepared last week will be used to...
1. What is the definition of an 'equivalence point' in an acid/base titration? (1 point) 2....
1. What is the definition of an 'equivalence point' in an acid/base titration? (1 point) 2. In part one of the experiment, you will prepare the acid solutions being titrated from a stock solution. Describe how you will accurately prepare 10.00 mL of 0.100 M HCl solution using a 1.00 M HCl stock solution. In your response to this question, be very specific about the quantities of stock solution and deionized water to be used in the dilution and the...
Concentration of NaOH = 1600 x10- Molar Sodium hydroxide Nach Trial 1 Trial 2 Trial Trial...
Concentration of NaOH = 1600 x10- Molar Sodium hydroxide Nach Trial 1 Trial 2 Trial Trial 4 2.60/1.20 1.40/1.30 28.20 29.10.26.1026.50 Volume of NaOH added Initial buret reading Final buret reading Moles of NaOH added Moles of HCl reacted Molarity of diluted HCI Molarity of undiluted HCI Average molarity of undiluted HCI Precision PROCEDURE 1. Obtain approximately 40 mL of an unknown acid in an Erlenmeyer flask from your teaching assistant. 2. Clean your 250-ml volumetric flask (contains exactly 250.00...
4.5e Question 1
Question 2
We now know the moles of hydroxide used in the titration. But, remember that, of the 100 mL of solution made from the ashes, only 20 mL were used for the titration. What is the total amount of hydroxide produced by the ashes? Volume HCl used: 5.44 mlL Concentration HCI solution 0.10 M 5.44x 10 mol HCl used 5.44 x 104 mol OH in 20 ml. solution mol OH A 1.527-g sample of an unknown...
QUESTION 1 Minnie Mouse did the Ka by Titrimetry experiment last week. Minnie used 28.63 mL of 0.136 M sodium hydroxide to reach the equivalence point when she titrated 0.3062 g of an unknown monoprotic acid. What is the number of moles of acid that were used? QUESTION 2 The Iron in a sample of iron ore can be converted completely to Fe2+ in aqueous solution, and this solution can then be titrated with KMnO4, as shown: MnO4(q) + 6...
0.3931 0.34:1 12:1 D Question 5 5 pts A 25.0 mL sample of 0.150 M hydrofluoric acid is titrated with a 0.150 M NaOH solution. What is the concentration of [F 1. Kb.[OH formed from the weak base ionization, and pH at the equivalence point? The K, of hydrofluoric acid is 3.5 x 10 In the space below enter your numerical answers in order of 1 to 4 include units. 1- Molarity of the Fluoride ion formed 2. The numerical...
Acid / Base Titrations: Pre-Laboratory Assignment 1. Give at least two characteristics desirable in a primary standard. 2. Define equivalence point and bitration end point. Do these two points in a titration occur when the same volume of titrant has been added? Explain. 3. A student standardized a NaOH solution using KHC.H.O.. Three different KHC.H.O. samples were dissolved in water and titrated with the same NaOH solution, each to a phenolphthalein end point. The pertinent reaction is: KHC3H404(aq) + NaOH(...
QUESTION 4 4 points (Extra Credit) Save Answer Bonus question: Kemmi Major is working on a professor's research project. She uses a back-titration technique to determine if her reaction has formed the maximum amount of product. Back-titration works by reacting the species of interest (S) with an excess of the first chemical (A), resulting in complete reaction of the species of interest and some left-over first chemical. Then a second chemical (B) is titrated into the mixture to react with...
i need help with questions for part b only please
ZULU Acid-Base Titration (worksheet to be completed in pairs - dee via e-mail Thursday, April 2, 11:59 pm) Concentration of NaOH: 0.0993 mol/L Part A: The following data was obtained when a 20.00 mL sample of acetic acid was titrated with 0.0993 mol/L sodium hydroxide (NaOH). The indicator changed color when 18.90 mL of NAOH was added (highlighted below). pH pH Volume of Base (mL) 1.00 2.00 Volume of Base...
..ll GoSmart 9:18 PM 7 73% Х CHM 103 Lab 3 Acid Base... + U Experiment 3 ACIDS AND BASES: ANALYSIS Learning Objectives Upon completion of this experiment, Mudents will have experienced 1. The determination of the percent by mass of acetic acid in vinegar 2. The determination of the molecular mass of an unknown acid Text Toples Acids and buses, indicators, titrations Notes to Students and Instructor The solution of sodium hydroxide prepared last week will be used to...
1. What is the definition of an 'equivalence point' in an acid/base titration? (1 point) 2. In part one of the experiment, you will prepare the acid solutions being titrated from a stock solution. Describe how you will accurately prepare 10.00 mL of 0.100 M HCl solution using a 1.00 M HCl stock solution. In your response to this question, be very specific about the quantities of stock solution and deionized water to be used in the dilution and the...
Concentration of NaOH = 1600 x10- Molar Sodium hydroxide Nach Trial 1 Trial 2 Trial Trial 4 2.60/1.20 1.40/1.30 28.20 29.10.26.1026.50 Volume of NaOH added Initial buret reading Final buret reading Moles of NaOH added Moles of HCl reacted Molarity of diluted HCI Molarity of undiluted HCI Average molarity of undiluted HCI Precision PROCEDURE 1. Obtain approximately 40 mL of an unknown acid in an Erlenmeyer flask from your teaching assistant. 2. Clean your 250-ml volumetric flask (contains exactly 250.00...
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