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Pre-Laboratory Questions: 1. Bromocresol green is chosen as the acid-base indicator. Within what pH range does...
Name Section/CRN EXPERIMENT 9 POTENTIOMETRIC DETERMINATION OF AN EQUILIBRIUM CONSTANT PRE-LABORATORY QUESTIONS The following preparatory questions...
Name Section/CRN EXPERIMENT 9 POTENTIOMETRIC DETERMINATION OF AN EQUILIBRIUM CONSTANT PRE-LABORATORY QUESTIONS The following preparatory questions should be answered before coming to lab. They are intended to introduce you to several jdeas that are important to aspects of the experiment. You must turn in your work to your instructor before you will be allowed to begin the experiment. Potassium acid phthalate, KHP (KHC4H&O4), is a primary standard reagent used to determine exactly the concentration of a solution of base, such...
Acid-Base Titration PRE-LABORATORY ASSIGNMENT This assignment must be completed in your notebook prior to attending pre-lab...
Acid-Base Titration PRE-LABORATORY ASSIGNMENT This assignment must be completed in your notebook prior to attending pre-lab lecture. 1. Sketch a picture of a 50 mL buret. Clearly label the location on the 0.00 mL line and the 50.00 mL line on the buret. Refer to appendix 5E for information about a buret. 2. Write the balanced chemical equation that will be used during this titration experiment. 3. Assume a student performed the acid-base titration experiment that you will be doing...
1. A student carries out a back titration to determine the concentration of ammonium chloride in a solution. The student...
1. A student carries out a back titration to determine the concentration of ammonium chloride in a solution. The student collects 10.80 mL of the original NH4Cl solution and dilutes it to 250.0 mL (we will refer to this as the dilute NH4Cl solution). Then 25.00 mL of the dilute NH4Cl solution are transferred to an Erlenmeyer flask and 25.00 mL of 0.1963 M NaOH are added. Calculate the moles of NaOH added to this Erlenmeyer flask. 2. In the...
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 ritration and 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: KHC H404 aq)...
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...
PRE-LABORATORY QUESTIONS, WATER: DETERMINING THE CONCENTRATION OF CALCIUM IONS IN WATER SAMPLES EXPT. SA HARD Prior...
PRE-LABORATORY QUESTIONS, WATER: DETERMINING THE CONCENTRATION OF CALCIUM IONS IN WATER SAMPLES EXPT. SA HARD Prior to coming to lab, carefully read the entire experimental procedure that follows and write an outline of the procedure in your lab notebook IN YOUR OWN WORDS (do not simply copy). Then, add three tables for your titrations of the blank, tap water, and CaCl samples. Complete these problems and hand in gt the bexinning of the laboratory period. Show all work. EDTA is...
need help with 5 and 6 6-8: Acid-Base Titration: Practice Titrations provide a method of quantitatively...
need help with 5 and 6
6-8: Acid-Base Titration: Practice Titrations provide a method of quantitatively measuring the concentration of an unknown solution. In an acid-base titration, this is done by delivering a titrant of known concentration into an analyte of known Although in this case you know the concentration of both NaOH and HCI, this will give you practice in performing a titration and calculating the concentration of the analyte, which in this case is HCI. 1. Start Virtual...
wame S tation Date CHM 112 - Acid-Base Titration using pH Sensor Pre-lab Questions 1. Calculate...
wame S tation Date CHM 112 - Acid-Base Titration using pH Sensor Pre-lab Questions 1. Calculate [H,O') and JOH) in solutions of the following pls. [H30") (OH) PH 4.18 5.70 8.56 2. A student titrated 20.00 mL of 0.410 M HCl with 0.320 M NaOH and collected the following data. Volume NaOH added, mL 0.00 0.39 0.46 4.00 0.54 6.00 0.62 8.00 0.70 10.00 0.78 12.00 0.87 14.00 0.96 16.00 1.07 18.00 20.00 1.35 22.00 1.56 24.00 1.93 24.50 2.09...
The following primary standards can be used for the standardization of bases except. a. Benzoic acid...
The following primary standards can be used for the standardization of bases except. a. Benzoic acid b. Oxalic acid c. CaCO3 d. KHP A solution that may contain NaOH, Na 2CO3, and NaHCO3, alone or in compatible combination was titrated with 0.1200 M HCl. The volume of the acid required to reach the phenolphthalein endpoint was 25.67 mL while 38.13 mL to reach the methyl red endpoint. What are the components of the mixture? a. Na2CO3 only b. NaOH only...
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...
Name Section/CRN EXPERIMENT 9 POTENTIOMETRIC DETERMINATION OF AN EQUILIBRIUM CONSTANT PRE-LABORATORY QUESTIONS The following preparatory questions should be answered before coming to lab. They are intended to introduce you to several jdeas that are important to aspects of the experiment. You must turn in your work to your instructor before you will be allowed to begin the experiment. Potassium acid phthalate, KHP (KHC4H&O4), is a primary standard reagent used to determine exactly the concentration of a solution of base, such...
Acid-Base Titration PRE-LABORATORY ASSIGNMENT This assignment must be completed in your notebook prior to attending pre-lab lecture. 1. Sketch a picture of a 50 mL buret. Clearly label the location on the 0.00 mL line and the 50.00 mL line on the buret. Refer to appendix 5E for information about a buret. 2. Write the balanced chemical equation that will be used during this titration experiment. 3. Assume a student performed the acid-base titration experiment that you will be doing...
Acid / Base Titrations: Pre-Laboratory Assignment 1. Give at least two characteristics desirable in a primary standard. 2. Define equivalence point and ritration and 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: KHC H404 aq)...
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...
PRE-LABORATORY QUESTIONS, WATER: DETERMINING THE CONCENTRATION OF CALCIUM IONS IN WATER SAMPLES EXPT. SA HARD Prior to coming to lab, carefully read the entire experimental procedure that follows and write an outline of the procedure in your lab notebook IN YOUR OWN WORDS (do not simply copy). Then, add three tables for your titrations of the blank, tap water, and CaCl samples. Complete these problems and hand in gt the bexinning of the laboratory period. Show all work. EDTA is...
need help with 5 and 6
6-8: Acid-Base Titration: Practice Titrations provide a method of quantitatively measuring the concentration of an unknown solution. In an acid-base titration, this is done by delivering a titrant of known concentration into an analyte of known Although in this case you know the concentration of both NaOH and HCI, this will give you practice in performing a titration and calculating the concentration of the analyte, which in this case is HCI. 1. Start Virtual...
wame S tation Date CHM 112 - Acid-Base Titration using pH Sensor Pre-lab Questions 1. Calculate [H,O') and JOH) in solutions of the following pls. [H30") (OH) PH 4.18 5.70 8.56 2. A student titrated 20.00 mL of 0.410 M HCl with 0.320 M NaOH and collected the following data. Volume NaOH added, mL 0.00 0.39 0.46 4.00 0.54 6.00 0.62 8.00 0.70 10.00 0.78 12.00 0.87 14.00 0.96 16.00 1.07 18.00 20.00 1.35 22.00 1.56 24.00 1.93 24.50 2.09...
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...
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