Given a stock solution of yellow #5 with a concentration of 2.9 x 10-4 M, calculate...
Given a stock solution of yellow #5 with a concentration of 2.9 x 10-4 M, calculate the concentration of yellow #5 in the 4 prepared solutions (A thru D) assuming you perform these dilutions exactly as required in the procedure of this lab.
| 50 mL Beaker | Dye stock solution | 1:1 Ethanol/Water solvent |
| A | 1.00 mL | 9.00 mL |
| B | 3.00 mL | 7.00 mL |
| C | 5.00 mL | 5.00 mL |
| D | 7.00 mL | 3.00 mL |
Homework Answers
The common way to make a solution is to dilute a stock solution with additional solvent. The relationship between the concentrations and volumes of the concentrated and diluted solutions is given below.
CiVi = CfVf
where Ci and Vi are the concentration and volume of the initial (concentrated) solution and Cf and Vf are the concentration and volume of the final (diluted) solution.
A. 2.9 x 10-4 M * 1.00mL = Cf*10.00mL
Cf = 2.9 x 10-4 M * 1.00mL/10.00mL = 2.9 x 10-5 M
B. 2.9 x 10-4 M * 3.00mL = Cf*10.00mL
Cf = 2.9 x 10-4 M * 3.00mL/10.00mL = 8.7*10^-5 M
C. 2.9 x 10-4 M * 5.00mL = Cf*10.00mL
Cf = 2.9 x 10-4 M * 5.00mL/10.00mL =1.45 x 10-4 M
D. 2.9 x 10-4 M * 7.00mL = Cf*10.00mL
Cf = 2.9 x 10-4 M * 7.00mL/10.00mL = 2.03*10^-4 M
Add Answer to:
Given a stock solution of yellow #5 with a concentration of 2.9
x 10-4 M, calculate...
Provided materials 0.01 to 0.05 M stock solutions of red and yellow dyes Dyo [stock] 0.0319...
Provided materials 0.01 to 0.05 M stock solutions of red and yellow dyes Dyo [stock] 0.0319 M V to mix red V of stock 100 ml 1.00 ml 264 mL yellow 0.0196 M 253 mL Experimental Procedure Dilute stock solutions by adding 1.00 mL of stock to sufficient distilled water to provide a total volume of 1.00 L 1.00 ml aliquots of stock solutions of red (0.0319 M) and yellow (0.0196 M) dyes are separately diluted with distilled water to...
1. Serial dilution Questions: a) (5 pts) Suppose you begin with stock solution of dye that has a concentration of 3...
1. Serial dilution Questions: a) (5 pts) Suppose you begin with stock solution of dye that has a concentration of 350.0 mg/L and do the following set of serial dilutions on it: 5.00 mL of stock diluted to a total volume (TV) of 500.00 mL (Dilution 1); 2.00 mL of Dilution 1 is then diluted to a TV of 250.00 mL (Dilution 2); finally, 1.00 mL of Dilution 2 is then diluted to a total volume of 100.00 mL. Calculate...
You are provided with a stock solution with a concentration of 1.0x10-5 M. You will be...
You are provided with a stock solution with a concentration of 1.0x10-5 M. You will be using this to make two standard solutions via serial dilution. 1. Perform calculations to determine the volume of the 1.0x10-5 M stock solution needed to prepare 10.0 mL of a 2.0x10-6 M solution. Perform calculations to determine the volume of the 2.0x10-6 M solution needed to prepare 10.0 mL of a 5.0x10-7 M solution. You are welcome to do the calculations in your notebook...
5. In this experiment, you will prepare a standard solution for a calibration curve for the...
5. In this experiment, you will prepare a standard solution for a calibration curve for the formation of FeSCN2 complex by reaction different volumes of 0.2 M Fe(NO,), and 0.002 M NaSCN. You will use 0.05M HNO, for all dilutions. Using the table, Calculate the equilibrium concentrations of FeSCN2 Vol of Fe Vol of SCN 0.1 M HNO Equilibrium concentration Fe[SCN]2' (mL) (mL.) (mL) 10.00 0.00 10.00 10.00 1.00 9.00 10.00 2.00 8.00 10.00 3.00 7.00 10.00 4.00 6.00 10.00...
Solutions and Dilutions 1. What would be the percent (%) concentration of a solution that results...
Solutions and Dilutions 1. What would be the percent (%) concentration of a solution that results from the combination of 115.0 grams of potassium nitrate with 0.320 L of water? Identify the solute and solvent of the solution 2. A solution is prepared by mixing together 76.40 mL of liquid ethanol (C2H4O) and 110.25 mL of water. Identify the solute and solvent of the resulting solution. What would be the percent (%) concentration of the solution? 3. How many grams...
Serial Dilution Questions 1, Serial dilution Questions: a) (5 pts) Suppose you begin with stock solution...
Serial Dilution Questions
1, Serial dilution Questions: a) (5 pts) Suppose you begin with stock solution of dye that has a concentration of 350.0 mg/L and do the following set of serial dilutions on it: 5.00 mL of stock diluted to a total volume (TV) of 500.00 mL (Dilution 1); 2,00 mL of Dilution 1 is then diluted to a TV of 250.00 mL (Dilution 2); finally, 1.00 mL of Dilution 2 is then diluted to a total volume of...
4) An unknown concentration of NiSO4 solution is to be determined by colorimetric analysis using a...
4) An unknown concentration of NiSO4 solution is to be determined by colorimetric analysis using a spectrophotometer. The standard solutions are prepared as the following: 2.00 mL (the same procedures for 3.0 mL, 4.00 mL, 6.00 mL, 7.00 mL) of the stock solution of 1.00 M NİSO4 is transferred into a 25-mL volumen flask and diluted by adding distilled water to the mark line. The spectrophotometer is calibrated at the wavelength of 635 nm. The absorbance (A) readings and the...
Calculate the concentration of the standard HCl solution you prepared. Determine this concentration for each trial...
Calculate the concentration of the standard HCl solution you
prepared. Determine this
concentration for each trial and the average and standard
deviation for all three trials.
Part B-Preparation and standardization of an HCl Solution 1. Before you can titrate your saturated Ca(oH)a solutions, you must prepare and standardize a dilute solution of Hcl. With a graduated cylinder measure at least 6 mL of the stock Hcl lution, transfer it to a 125 mL Erlenmeyer, and dilute to approximately 100 mL...
1. A stock solution of blue dye has a concentration of 4.0 x 10 M. If...
1. A stock solution of blue dye has a concentration of 4.0 x 10 M. If 8.00 mL water is added to 2.00 mL of the blue dye stock solution, what is the concentration of the new solution?
Laboratory goggles must be worn! A) Preparation of Solutions from Concentrated Solution In this part the...
Laboratory goggles must be worn! A) Preparation of Solutions from Concentrated Solution In this part the experiment you will prepare several dilute solutions from the more concentrated cobalt nitrate solution 1. Read the label on the provided cobalt nitrate solution and record the molarity accurately. su-olu 563/ 316.603:48 صلاح 2. 3. 4. Molarity of Ca(NO3)2 solution 182.95 g/mol Obtain a 25-ml buret. Examine its markings, the line that spans the entire circumference occur for each milliliter. The smaller lines indicate...
Provided materials 0.01 to 0.05 M stock solutions of red and yellow dyes Dyo [stock] 0.0319 M V to mix red V of stock 100 ml 1.00 ml 264 mL yellow 0.0196 M 253 mL Experimental Procedure Dilute stock solutions by adding 1.00 mL of stock to sufficient distilled water to provide a total volume of 1.00 L 1.00 ml aliquots of stock solutions of red (0.0319 M) and yellow (0.0196 M) dyes are separately diluted with distilled water to...
1. Serial dilution Questions: a) (5 pts) Suppose you begin with stock solution of dye that has a concentration of 350.0 mg/L and do the following set of serial dilutions on it: 5.00 mL of stock diluted to a total volume (TV) of 500.00 mL (Dilution 1); 2.00 mL of Dilution 1 is then diluted to a TV of 250.00 mL (Dilution 2); finally, 1.00 mL of Dilution 2 is then diluted to a total volume of 100.00 mL. Calculate...
5. In this experiment, you will prepare a standard solution for a calibration curve for the formation of FeSCN2 complex by reaction different volumes of 0.2 M Fe(NO,), and 0.002 M NaSCN. You will use 0.05M HNO, for all dilutions. Using the table, Calculate the equilibrium concentrations of FeSCN2 Vol of Fe Vol of SCN 0.1 M HNO Equilibrium concentration Fe[SCN]2' (mL) (mL.) (mL) 10.00 0.00 10.00 10.00 1.00 9.00 10.00 2.00 8.00 10.00 3.00 7.00 10.00 4.00 6.00 10.00...
Solutions and Dilutions 1. What would be the percent (%) concentration of a solution that results from the combination of 115.0 grams of potassium nitrate with 0.320 L of water? Identify the solute and solvent of the solution 2. A solution is prepared by mixing together 76.40 mL of liquid ethanol (C2H4O) and 110.25 mL of water. Identify the solute and solvent of the resulting solution. What would be the percent (%) concentration of the solution? 3. How many grams...
Serial Dilution Questions
1, Serial dilution Questions: a) (5 pts) Suppose you begin with stock solution of dye that has a concentration of 350.0 mg/L and do the following set of serial dilutions on it: 5.00 mL of stock diluted to a total volume (TV) of 500.00 mL (Dilution 1); 2,00 mL of Dilution 1 is then diluted to a TV of 250.00 mL (Dilution 2); finally, 1.00 mL of Dilution 2 is then diluted to a total volume of...
4) An unknown concentration of NiSO4 solution is to be determined by colorimetric analysis using a spectrophotometer. The standard solutions are prepared as the following: 2.00 mL (the same procedures for 3.0 mL, 4.00 mL, 6.00 mL, 7.00 mL) of the stock solution of 1.00 M NİSO4 is transferred into a 25-mL volumen flask and diluted by adding distilled water to the mark line. The spectrophotometer is calibrated at the wavelength of 635 nm. The absorbance (A) readings and the...
Calculate the concentration of the standard HCl solution you
prepared. Determine this
concentration for each trial and the average and standard
deviation for all three trials.
Part B-Preparation and standardization of an HCl Solution 1. Before you can titrate your saturated Ca(oH)a solutions, you must prepare and standardize a dilute solution of Hcl. With a graduated cylinder measure at least 6 mL of the stock Hcl lution, transfer it to a 125 mL Erlenmeyer, and dilute to approximately 100 mL...
1. A stock solution of blue dye has a concentration of 4.0 x 10 M. If 8.00 mL water is added to 2.00 mL of the blue dye stock solution, what is the concentration of the new solution?
Laboratory goggles must be worn! A) Preparation of Solutions from Concentrated Solution In this part the experiment you will prepare several dilute solutions from the more concentrated cobalt nitrate solution 1. Read the label on the provided cobalt nitrate solution and record the molarity accurately. su-olu 563/ 316.603:48 صلاح 2. 3. 4. Molarity of Ca(NO3)2 solution 182.95 g/mol Obtain a 25-ml buret. Examine its markings, the line that spans the entire circumference occur for each milliliter. The smaller lines indicate...
Most questions answered within 3 hours.
-
a) The frequency of light coming out from a laser source is 297
MHz. What is...
asked 1 minute from now -
Assume that the correlation coefficient between achievement test
scores (X) and grade point averages (Y) among...
asked 11 minutes ago -
In Chapter 1 titled "So Close and Yet So Different", in "Why
Nations Fail" authors bring...
asked 8 minutes ago -
Leadership Philosophy
Write a two-page paper identifying your personal leadership
philosophy based on your new perspective...
asked 5 minutes ago -
Which of these function correctly defines the function g(),
which should return a pointer to a...
asked 14 minutes ago -
Pickett Industries just paid a dividend of D0 = $1.10. Analysts
expect the company's dividend to...
asked 14 minutes ago -
Suppose a random sample of 900 measurements is taken from an
unknown population. The average of...
asked 17 minutes ago -
Suppose we add another SRC instruction xor ra, rb, rc that xors
the contents of registers...
asked 18 minutes ago -
Hello, I need some help creating this class in Java. This is for
a larger project....
asked 39 minutes ago -
Why does entrepreneurs trying to employ AI into their
business organizations? What are the advantages and...
asked 37 minutes ago -
// This program is supposed to display every fifth year
// starting with 2017; that is,...
asked 39 minutes ago -
for each of the following situation, explain in what way the
experimentally determine molecular weight would...
asked 45 minutes ago