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Of the 100 mL of stock solution that is to be prepared for Part A.1, how many milliliters (total volume) will be used for preparing the standard solutions in Part A.2? 2. Experimental Procedure, Part A.1. A 100.0-mL volume of a 0.10 M stock solution of Cu²+ is to be prepared using CuSO4.5H₂O (molar mass=249.68 g/mol).² a. How many grams of CuSO4.5H₂O must be measured for the preparation? b. Describe the procedure for the preparation of 0.01 M HNO3, the solution used as a diluent, starting with conc (16 M) HNO3. c. A 2.0-ml pipet transfers the 0.10 M Cu²+ stock solution to a 25.0-mL volumetric flask, which is then diluted to the mark of the volumetric flask with 0.01 M HNO3. What is the molar concentration of the diluted Cu²+ solution?

Of the 100 mL of stock solution that is to be prepared for Part A.1, how many milliliters (total volume) will be used for preparing the standard solutions in Part A.2? 2. Experimental Procedure, Part A.1. A 100.0-mL volume of a 0.10 M stock solution of Cu²+ is to be prepared using CuSO4.5H₂O (molar mass=249.68 g/mol).² a. How many grams of CuSO4.5H₂O must be measured for the preparation? b. Describe the procedure for the preparation of 0.01 M HNO3, the solution used as a diluent, starting with conc (16 M) HNO3. c. A 2.0-ml pipet transfers the 0.10 M Cu²+ stock solution to a 25.0-mL volumetric flask, which is then diluted to the mark of the volumetric flask with 0.01 M HNO3. What is the molar concentration of the diluted Cu²+ solution?

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Chapter4: Types Of Chemical Reactions And Solution Stoichiometry
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1. Of the 100 mL of stock solution that is to be prepared for Part A.1, how many milliliters (total volume) will be used for preparing the standard solutions in Part A.2? 2. Experimental Procedure, Part A.1. A 100.0-mL volume of a 0.10 M stock solution of Cu²+ is to be prepared using CuSO4.5H₂O (molar mass=249.68 g/mol).² a. How many grams of CuSO4.5H₂O must be measured for the preparation? b. Describe the procedure for the preparation of 0.01 M HNO3, the solution used as a diluent, starting with conc (16 M) HNO3. c. A 2.0-ml pipet transfers the 0.10 M Cu²+ stock solution to a 25.0-mL volumetric flask, which is then diluted to the mark of the volumetric flask with 0.01 M HNO3. What is the molar concentration of the diluted Cu²+ solution?
Transcribed Image Text:1. Of the 100 mL of stock solution that is to be prepared for Part A.1, how many milliliters (total volume) will be used for preparing the standard solutions in Part A.2? 2. Experimental Procedure, Part A.1. A 100.0-mL volume of a 0.10 M stock solution of Cu²+ is to be prepared using CuSO4.5H₂O (molar mass=249.68 g/mol).² a. How many grams of CuSO4.5H₂O must be measured for the preparation? b. Describe the procedure for the preparation of 0.01 M HNO3, the solution used as a diluent, starting with conc (16 M) HNO3. c. A 2.0-ml pipet transfers the 0.10 M Cu²+ stock solution to a 25.0-mL volumetric flask, which is then diluted to the mark of the volumetric flask with 0.01 M HNO3. What is the molar concentration of the diluted Cu²+ solution?
A. A Set of Standard Solutions Data Analysis, A 16a mmin 16b B. Determination of max Identify the metal ion for analysis on the Report Sheet. 1. Prepare a stock solution. a. Prepare 100 mL of a 0.10 M stock solution. To do this, you will need to know the formula of the Cu²+, Ni²+, or Fe³+ ion-containing salt in order to calculate the mass of salt for its preparation. See Prelaboratory Assign- ment question 2a. Show a similar calculation for your selected metal ion on the Report Sheet. Measure the mass of the salt (±0.001 g). b. Transfer the salt to a 100-mL volumetric flask, half-filled with 0.01 M HNO3, add the appropriate complexing agent (see Table 35.1), and then dilute to the mark with 0.01 M HNO3. Record on the Report Sheet the exact molar concentration of the stock solution. Table 35.1 Volume of Complexing Agent for Stock Solution Preparation Metal Ion Volume of Complexing Agent Cu²+ 10 mL of conc NH, Ni²+ 10 mL of conc NH; Fe³+ 20 mL of 0.1 M NASCN 2. Prepare the standard solutions. Prepare the solutions in Table 35.2 using clean, labeled 25-mL volumetric flasks (or 200-mm test tubes). Use pipets to dispense the volumes of stock solution prepared in Part A. Additional standard solutions may need to be prepared the absorbance val- ues for the set of standard solutions should range from 0 to ~1.1. See Part C.1. Calculate the molar concentrations of the standard solutions and record them in Part C of the Report Sheet. 1. Calibrate the spectrophotometer. After the spectrophotometer has been turned on for at least 10 minutes, set the wavelength scale to its minimum (~350 nm), and set the zero (0%7) on the spectrophotometer. Rinse twice a cuvet with the blank solution (see Table 35.2). Fill the cuvet at least three-fourths full with the blank solution and dry the outside of the cuvet with a clean Kimwipe, removing fingerprints and water. Place the cuvet into the sample compartment, Table 35.2 A Set of Standard Solutions for Metal Ion Analysis Standard Solution 0.10 M Metal Ion 0.01 M HNO3 0 mL Dilute to 25 mL 1 mL Dilute to 25 mL Dilute to 25 mL Dilute to 25 mL Dilute to 25 mL Dilute to 25 mL Blank 1 2 نا نیا 3 4 390 Spectrophotometric Metal lon Analysis 5 mL 10 mL 15 mL 20 mL
Transcribed Image Text:A. A Set of Standard Solutions Data Analysis, A 16a mmin 16b B. Determination of max Identify the metal ion for analysis on the Report Sheet. 1. Prepare a stock solution. a. Prepare 100 mL of a 0.10 M stock solution. To do this, you will need to know the formula of the Cu²+, Ni²+, or Fe³+ ion-containing salt in order to calculate the mass of salt for its preparation. See Prelaboratory Assign- ment question 2a. Show a similar calculation for your selected metal ion on the Report Sheet. Measure the mass of the salt (±0.001 g). b. Transfer the salt to a 100-mL volumetric flask, half-filled with 0.01 M HNO3, add the appropriate complexing agent (see Table 35.1), and then dilute to the mark with 0.01 M HNO3. Record on the Report Sheet the exact molar concentration of the stock solution. Table 35.1 Volume of Complexing Agent for Stock Solution Preparation Metal Ion Volume of Complexing Agent Cu²+ 10 mL of conc NH, Ni²+ 10 mL of conc NH; Fe³+ 20 mL of 0.1 M NASCN 2. Prepare the standard solutions. Prepare the solutions in Table 35.2 using clean, labeled 25-mL volumetric flasks (or 200-mm test tubes). Use pipets to dispense the volumes of stock solution prepared in Part A. Additional standard solutions may need to be prepared the absorbance val- ues for the set of standard solutions should range from 0 to ~1.1. See Part C.1. Calculate the molar concentrations of the standard solutions and record them in Part C of the Report Sheet. 1. Calibrate the spectrophotometer. After the spectrophotometer has been turned on for at least 10 minutes, set the wavelength scale to its minimum (~350 nm), and set the zero (0%7) on the spectrophotometer. Rinse twice a cuvet with the blank solution (see Table 35.2). Fill the cuvet at least three-fourths full with the blank solution and dry the outside of the cuvet with a clean Kimwipe, removing fingerprints and water. Place the cuvet into the sample compartment, Table 35.2 A Set of Standard Solutions for Metal Ion Analysis Standard Solution 0.10 M Metal Ion 0.01 M HNO3 0 mL Dilute to 25 mL 1 mL Dilute to 25 mL Dilute to 25 mL Dilute to 25 mL Dilute to 25 mL Dilute to 25 mL Blank 1 2 نا نیا 3 4 390 Spectrophotometric Metal lon Analysis 5 mL 10 mL 15 mL 20 mL
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