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question 2: choice 1- corrosive, flammable, oxidizers
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Question 4 Status: Not yet answered | Points possible: 1.00 Suppose you are titrating an acid...
Question 4 Status: Not yet answered | Points possible: 1.00 Suppose you are titrating an acid of unknown concentration with a standardized base. At the beginning of the titration, you read the base titrant volume as 2.86 mL. After running the titration and reaching the endpoint, you read the base titrant volume as 21.17 mL. What volume, in mL, of base was required for the titration? Type answer: Question 6 Status: Not yet answered Points possible: 1.00 Suppose you are...
It's a weak acid strong base titration Experiment 4: Identification of an unknown acid by titration...
It's a weak acid strong base titration
Experiment 4: Identification of an unknown acid by titration Page 2 of 15 Background In this experiment, you will use both qualitative and quantitative properties to determine an unknown acid's identity and concentration. To do this analysis, you will perform a titration of your unknown acid sample-specifically a potentiometric titration where you use a pH meter and record pH values during the titration, combined with a visual titration using a color indi- cator...
To learn about titration types and how to calculate pH at different points of titration. In an acid-base titration, a...
To learn about titration types
and how to calculate pH at different points of titration. In an
acid-base titration, a titrant (solution of a base or acid) is
added slowly to an analyte (solution of an acid or base). The
titration is often monitored using a pH meter. A plot of pH as a
function of the volume of titrant added is called a pH titration
curve. Prior to the titration, the pH is determined by the
concentration of the...
EXP #9:Pre-Lab answer question 3, attached below is page two to reference! Instructor Name: Student Name:...
EXP
#9:Pre-Lab
answer question 3, attached below is page two to
reference!
Instructor Name: Student Name: 3. An unknown solution gives the following sequential results for color when indicators are added (shown below). Using the corresponding color ranges from the table on page 2, estimate the approximate pH range of this unknown solution. Explain. Bluish purple Bromphenol blue: Yellow Methyl Red: Blue Bromothymol Blue: Colorless Phenolpthalein: For a titration, pure indicators are used because the goal is to use an...
please help with my pre lab additional information Pre-Lab Questions: 1. What is the definition of...
please help with my pre lab
additional information
Pre-Lab Questions: 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 HCI stock solution. In your response to this question, be very specific about the quantities of stock solution and...
Learning Goal: To learn about titration types and how to calculate pH at different points of...
Learning Goal: To learn about titration types and how to calculate pH at different points of titration. In an acid-base titration, a titrant (solution of a base or acid) is added slowly to an analyte (solution of an acid or base). The titration is often monitored using a pH meter. A plot of pH as a function of the volume of titrant added is called a pH titration curve. Prior to the titration, the pH is determined by the concentration...
Pre-Laboratory Questions: 1. Bromocresol green is chosen as the acid-base indicator. Within what pH range does...
Pre-Laboratory Questions: 1. Bromocresol green is chosen as the acid-base indicator. Within what pH range does it change color? What color should the indicator be at the endpoint of the titration? 2. Calculate the maximum number of moles of ammonia that can be generated when 1.073 grams of NH SCN reacts with excess Ca(OH)2, using all three possible reactions. 3. Calculate the number of moles of ammonia that must have reacted with boric acid if 21.55 ml of a 0.3143...
QUESTION 1 6 points Save Answer The purpose of an indicator in an acid-base titration is...
QUESTION 1 6 points Save Answer The purpose of an indicator in an acid-base titration is to indicate the of the titration. Use Table 10.2 for the following question. If an acidic solution is titrated with a basic solution and methyl violet is used as an indicator, the solution color will change from to QUESTION 2 3 points Save Answer The molarity of a solution prepared by dissolving 17.0 g of hydrochloric acid (HCI (aq) in 133 mL of water...
need help with question 2 1. In Part C of this lab, which of the following...
need help with question 2
1. In Part C of this lab, which of the following pieces of glassware is used to accurately deliver 10.00 ml of acetic acid into your Erlenmeyer flask? O a. Volumetric pipet. b. Disposable pipet. c. Graduated cylinder. 2. What is the purpose of a titration thief? a. To hold a few milliliters of the analyte in case you overshoot the endpoint. b. To hold a few milliliters of the titrant in case you overshoot...
1. The pH of a 50.0 mL solution of 0.500 M HSCN (the analyte) was measured...
1. The pH of a 50.0 mL solution of 0.500 M HSCN (the analyte) was measured and found to be 3.80. What is pKa for the acid based on this measurement? 2. Trace amounts of an Indicator HIn was added to the solution described above. The indicator has a pKa (pkIn) of 11.85. This indicator is known to be yellow in solution in the form HIn and blue in solution in the form In- . In a forward titration, a...
Question 4 Status: Not yet answered | Points possible: 1.00 Suppose you are titrating an acid of unknown concentration with a standardized base. At the beginning of the titration, you read the base titrant volume as 2.86 mL. After running the titration and reaching the endpoint, you read the base titrant volume as 21.17 mL. What volume, in mL, of base was required for the titration? Type answer: Question 6 Status: Not yet answered Points possible: 1.00 Suppose you are...
It's a weak acid strong base titration
Experiment 4: Identification of an unknown acid by titration Page 2 of 15 Background In this experiment, you will use both qualitative and quantitative properties to determine an unknown acid's identity and concentration. To do this analysis, you will perform a titration of your unknown acid sample-specifically a potentiometric titration where you use a pH meter and record pH values during the titration, combined with a visual titration using a color indi- cator...
To learn about titration types
and how to calculate pH at different points of titration. In an
acid-base titration, a titrant (solution of a base or acid) is
added slowly to an analyte (solution of an acid or base). The
titration is often monitored using a pH meter. A plot of pH as a
function of the volume of titrant added is called a pH titration
curve. Prior to the titration, the pH is determined by the
concentration of the...
EXP
#9:Pre-Lab
answer question 3, attached below is page two to
reference!
Instructor Name: Student Name: 3. An unknown solution gives the following sequential results for color when indicators are added (shown below). Using the corresponding color ranges from the table on page 2, estimate the approximate pH range of this unknown solution. Explain. Bluish purple Bromphenol blue: Yellow Methyl Red: Blue Bromothymol Blue: Colorless Phenolpthalein: For a titration, pure indicators are used because the goal is to use an...
please help with my pre lab
additional information
Pre-Lab Questions: 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 HCI stock solution. In your response to this question, be very specific about the quantities of stock solution and...
Pre-Laboratory Questions: 1. Bromocresol green is chosen as the acid-base indicator. Within what pH range does it change color? What color should the indicator be at the endpoint of the titration? 2. Calculate the maximum number of moles of ammonia that can be generated when 1.073 grams of NH SCN reacts with excess Ca(OH)2, using all three possible reactions. 3. Calculate the number of moles of ammonia that must have reacted with boric acid if 21.55 ml of a 0.3143...
QUESTION 1 6 points Save Answer The purpose of an indicator in an acid-base titration is to indicate the of the titration. Use Table 10.2 for the following question. If an acidic solution is titrated with a basic solution and methyl violet is used as an indicator, the solution color will change from to QUESTION 2 3 points Save Answer The molarity of a solution prepared by dissolving 17.0 g of hydrochloric acid (HCI (aq) in 133 mL of water...
need help with question 2
1. In Part C of this lab, which of the following pieces of glassware is used to accurately deliver 10.00 ml of acetic acid into your Erlenmeyer flask? O a. Volumetric pipet. b. Disposable pipet. c. Graduated cylinder. 2. What is the purpose of a titration thief? a. To hold a few milliliters of the analyte in case you overshoot the endpoint. b. To hold a few milliliters of the titrant in case you overshoot...
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