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2. A student obtains the following concentrations for her son individual titrations: 0.1000 M 0,0998 M,...
1) A student repeats an analysis 4 times and obtains the following calculated molarities. What is...
1) A student repeats an analysis 4 times and obtains the following calculated molarities. What is the precision of the laboratory analysis (determined as relative average deviation)? 0.5933 M, 0.5972 M, 0.5978 M, 0.5941 M 2) Find the grams of AgCl formed by the reaction of 6.41 g of ZnCl2 with 40.0ml of a 0.404 M AgNO3 solution according to the reaction : ZnCl2 (s) + 2 AgNO3 (aq) ---- Zn(NO3)2 (aq) + 2 AgCl (s) 3) How many moles...
ELIMINARY EXERCISES: Experiment 16 Acid-Base Titrations- Define the following terms associated with titrations: a. standard solutions...
ELIMINARY EXERCISES: Experiment 16 Acid-Base Titrations- Define the following terms associated with titrations: a. standard solutions are base Soluchon When the molanty is alrea known. b. ondpoint is the pant at which color change occurs. C. indicator quie. Watersplutte dues that have one color in basic. 2. Write the balanced formula equation and the net ionic equation for the reaction of sodium hydroxide with hydrochloric acid. Formula equation: Net Ionic equation: 3. What is the molarity of a solution prepared...
IMENTAL PROCEDURES AND DATA it A Micropipetting 2 The student has used a micropipette to add...
IMENTAL PROCEDURES AND DATA it A Micropipetting 2 The student has used a micropipette to add five 250 ml aliquos to: braker and recorded the masses below. 3) Determine the mass of EACH individual sample through subtraction) 4) Calculate the mean, standard deviation, and RSD for the mass of water. Mass of clean, dry beaker = 91.4536 Sample 1 2 3 Total Mass 91.7025 91.962 92.2168 92.454g 92.704 g Sample Mass .249g .5099 1.509 9 1.001 q 1. 2519 4...
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(...
2. (25) A student measures the period of a pendulum and obtains the following values: Trial...
2. (25) A student measures the period of a pendulum and obtains the following values: Trial Period (sec.) 1.35 1.34 1.32 1.36 1.33 1.34 1.37 1.35 OTC 00 (a) Find the mean, the sample variance, and the sample standard deviation. Find the standard deviation of the mean. (b) Estimate the probability that another single measurement will fall within 0.02 seconds of the mean. Why is this just an "estimate"?
5.) Enter your answer in the provided box. Calculate the following quantity: volume of 1.551 M...
5.) Enter your answer in the provided box. Calculate the following quantity: volume of 1.551 M copper(II) nitrate that must be diluted with water to prepare 946.4 mL of a 0.9513 M solution. __?___ mL 6.) . Enter your answer in the provided box. How many milliliters of 0.836 M HCl are needed to react with 28.8 g of CaCO3? 2HCl(aq) + CaCO3(s) → CaCl2(aq) + CO2(g) + H2O(l) __?__ mL 7.) . Enter your answer in the provided box. Sodium...
Use a volumetric pipet to deliver 2 mL of 4 M sodium hydroxide solution to each...
Use a volumetric pipet to deliver 2 mL of 4 M sodium hydroxide solution to each of seven 100-mL volumetric flasks. Add 2,4, 6, 8, and 10 mL, respectively, of the salicylic acid stock solution to 5 of the labeled flasks. Calculate the concentrations of the standard solutions. Use a pipet to place 10 mL of the unknown solution into another volumetric flask and label Unknown 1. Dilute each solution to the mark with DI water. The seventh flask that...
Page 12 of 12 BG10.2 Acid-Base Titration s part of a lab exam, your instructor gives...
Page 12 of 12 BG10.2 Acid-Base Titration s part of a lab exam, your instructor gives you a sample of hydrochloric acid and asks you to ermine its concentration using the procedure in this lab. You make up a solution of sodium hydroxide droxide by dissolving 2.0 g of sodium hydroxide pellets in water and diluting it to exactly 500 me. You then titrate your sodium hydroxide solution three times with a hydrochloric acid solution with a molarity of 0.1024...
Complex-Formation Titrations +2 10. Calculate the Ca concentration and pCa logCa D of a solution that results from the mixing of each of the following solutions (buffered at a pH of 10.0): +2 +2...
Complex-Formation Titrations +2 10. Calculate the Ca concentration and pCa logCa D of a solution that results from the mixing of each of the following solutions (buffered at a pH of 10.0): +2 +2 +2 EDTA +10 The complexation reaction: Ca CaEDTA atapH of 10.0, has an Kefr r 5.0 s 10 +2 +10 Kerr-lCaEDTAI/(1 Ca.-11 EDTA I) = 5.0 x 10 a) Calculate the pCa of a solution of 50.0 ml of 0.0102 MCa with 50.0 ml of 0.0100...
Page 12 of 12 BG10.2 Acid-Base Titration As part of a lab exam, your instructor gives...
Page 12 of 12 BG10.2 Acid-Base Titration As part of a lab exam, your instructor gives you a sample of hydrochloric acid and asks you to determine its concentration using the procedure in this lab. You make up a solution of sodium hydroxide by dissolving 2.0 g of sodium hydroxide pellets in water and diluting it to exactly 500 mL You then titrate your sodium hydroxide solution three times with a hydrochloric acid solution with a molarity of 0.1024 molliter....
ELIMINARY EXERCISES: Experiment 16 Acid-Base Titrations- Define the following terms associated with titrations: a. standard solutions are base Soluchon When the molanty is alrea known. b. ondpoint is the pant at which color change occurs. C. indicator quie. Watersplutte dues that have one color in basic. 2. Write the balanced formula equation and the net ionic equation for the reaction of sodium hydroxide with hydrochloric acid. Formula equation: Net Ionic equation: 3. What is the molarity of a solution prepared...
IMENTAL PROCEDURES AND DATA it A Micropipetting 2 The student has used a micropipette to add five 250 ml aliquos to: braker and recorded the masses below. 3) Determine the mass of EACH individual sample through subtraction) 4) Calculate the mean, standard deviation, and RSD for the mass of water. Mass of clean, dry beaker = 91.4536 Sample 1 2 3 Total Mass 91.7025 91.962 92.2168 92.454g 92.704 g Sample Mass .249g .5099 1.509 9 1.001 q 1. 2519 4...
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(...
2. (25) A student measures the period of a pendulum and obtains the following values: Trial Period (sec.) 1.35 1.34 1.32 1.36 1.33 1.34 1.37 1.35 OTC 00 (a) Find the mean, the sample variance, and the sample standard deviation. Find the standard deviation of the mean. (b) Estimate the probability that another single measurement will fall within 0.02 seconds of the mean. Why is this just an "estimate"?
Use a volumetric pipet to deliver 2 mL of 4 M sodium hydroxide solution to each of seven 100-mL volumetric flasks. Add 2,4, 6, 8, and 10 mL, respectively, of the salicylic acid stock solution to 5 of the labeled flasks. Calculate the concentrations of the standard solutions. Use a pipet to place 10 mL of the unknown solution into another volumetric flask and label Unknown 1. Dilute each solution to the mark with DI water. The seventh flask that...
Page 12 of 12 BG10.2 Acid-Base Titration s part of a lab exam, your instructor gives you a sample of hydrochloric acid and asks you to ermine its concentration using the procedure in this lab. You make up a solution of sodium hydroxide droxide by dissolving 2.0 g of sodium hydroxide pellets in water and diluting it to exactly 500 me. You then titrate your sodium hydroxide solution three times with a hydrochloric acid solution with a molarity of 0.1024...
Complex-Formation Titrations +2 10. Calculate the Ca concentration and pCa logCa D of a solution that results from the mixing of each of the following solutions (buffered at a pH of 10.0): +2 +2 +2 EDTA +10 The complexation reaction: Ca CaEDTA atapH of 10.0, has an Kefr r 5.0 s 10 +2 +10 Kerr-lCaEDTAI/(1 Ca.-11 EDTA I) = 5.0 x 10 a) Calculate the pCa of a solution of 50.0 ml of 0.0102 MCa with 50.0 ml of 0.0100...
Page 12 of 12 BG10.2 Acid-Base Titration As part of a lab exam, your instructor gives you a sample of hydrochloric acid and asks you to determine its concentration using the procedure in this lab. You make up a solution of sodium hydroxide by dissolving 2.0 g of sodium hydroxide pellets in water and diluting it to exactly 500 mL You then titrate your sodium hydroxide solution three times with a hydrochloric acid solution with a molarity of 0.1024 molliter....
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