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5. You are provided with a mixture of Pb, cu? and Ni cations? (30 pts) How...
Would it be possible to confirm the presence of Cu^2+ or Ni^2+ in a mixture of...
Would it be possible to confirm the presence of Cu^2+ or Ni^2+ in a mixture of these two ions? Why or why not? Consider the observations for the reaction of Pb^2+ ion with HCl. Explain how a student could have an unknown mixture containing Pb^2+ and not be able to confirm it if the addition of reagents is not performed carefully.
You and yor lab partner need to selectively precipitte the cations in a solution that contains a ...
You and yor lab partner need to selectively precipitte the cations in a solution that contains a mixture of 0.040 M Ba(NO3)2 and 0.060 Pb(NO3)2. The separation is required to be quantitative, meaning that at least 99.9% of onre cation must be precipitated and removed from the mixture before the second cation begins to precipitate.Your partner suggests that 1.0M solution of Na2SO4 could be used as a precipitating agent to accomplish the separation. You tell your partner that this precipitating...
Lab 8: Qualitative analysis of cations Would you be able to distinguish between Cu2+ and Ni2+...
Lab 8: Qualitative analysis of cations Would you be able to distinguish between Cu2+ and Ni2+ ions in a solution if you added concentrated NaOH solution? What would you expect to happen? Write a balanced molecular and net ionic equation for both ions reacting with NaOH. Use Cu(NO3)2 and Ni(NO3)2 in your reactions for the respective ions. Show the correct phase of all species in the reaction for full credit.
Lab 8: Qualitative Analysis of Cations Would you be able to distinguish between Cu2+ and Ni2+...
Lab 8: Qualitative Analysis of Cations Would you be able to distinguish between Cu2+ and Ni2+ ions in a solution if you added concentrated NaOH to the solution? What would you expect to happen? Write a balanced molecular and net ionic equation for both ions reacting with NaOH. Use Cu(NO3)2 and Ni(NO3)2 in your reactions for the respective ions. Show the correct phases of all species in the reactions for full credit.
You have a mixture of three soluble cations with the following concentrations: i. Ag+ with [Ag+]...
You have a mixture of three soluble cations with the following concentrations: i. Ag+ with [Ag+] = 0.02 M ii. Ca2+ with [Ca2+] = 0.1 M and iii. Ba2+ with [Ba2+] = 0.1 M Assuming that you are slowly adding CrO42- ions, which ion will precipitate first, second and third? The following Ksp values are provided. Ksp of Ag2CrO4 is 1.9 × 10-12 Ksp of CaCrO4 is 7.1 × 10-4 Ksp of BaCrO4 is 1.2 × 10-10 1. Ag+ first,...
Below is an analysis scheme for a mixture of Co2+, Cu²+, Fe3+, and Ni2+. You are...
Below is an analysis scheme for a mixture of Co2+, Cu²+, Fe3+, and Ni2+. You are asked for the formula of each cited precipitate and for the formula of the cation in the final solution. Include the net ionic chemical equations for the precipitation reactions. Step 1. In test tube 11, potassium nitrite acidified with acetic acid is added to the mixture of the four cations (the anion present is nitrate). A precipitate is produced. The aqueous solution is decanted...
6. Describe a method for how you would identify the components of your mixture using GC....
6. Describe a method for how you would identify the components of your mixture using GC. (3 pts)
Problem 2: Non-reacting Ideal Gas Mixture (30 pts) 5 kmole/s of a mixture of carbon monoxide CO (...
Problem 2: Non-reacting Ideal Gas Mixture (30 pts) 5 kmole/s of a mixture of carbon monoxide CO (40% molar) and Nz (60% molar) at 47°C and 2 bar (state 1) is mixed with of a mixture of carbon dioxide CO2 (55% molar) and N2 (45% molar) at 147°C (state 2) to obtain a mixture at state 3 with 77°C, The heat transfer to the surrounding is neglected. Determine: a) b) c) The mole flow rate n2 in kmole/s. (18 pts)...
Propose an extraction scheme to separate the mixture of following compounds shown below: (5 pts) ...
question regarding separation using acid-base
extraction lab
Propose an extraction scheme to separate the mixture of following compounds shown below: (5 pts) COOH Br and
Propose an extraction scheme to separate the mixture of following compounds shown below: (5 pts) COOH Br and
betal Question 9 1 pts If you are given a mixture of three compounds like you...
betal Question 9 1 pts If you are given a mixture of three compounds like you were given in lab with the acetylferrocene/ferrocene mixture), what would be the proper order to separate and isolate those three compounds. 1st step Choose Run the column, collecting fractions in tared flasks Run a TLC of the three compounds in a fairly non-polar solvent such as hexanes Once the best eluent has been found, build a column using that event If the compounds are...
Would it be possible to confirm the presence of Cu^2+ or Ni^2+ in a mixture of these two ions? Why or why not? Consider the observations for the reaction of Pb^2+ ion with HCl. Explain how a student could have an unknown mixture containing Pb^2+ and not be able to confirm it if the addition of reagents is not performed carefully.
Lab 8: Qualitative Analysis of Cations Would you be able to distinguish between Cu2+ and Ni2+ ions in a solution if you added concentrated NaOH to the solution? What would you expect to happen? Write a balanced molecular and net ionic equation for both ions reacting with NaOH. Use Cu(NO3)2 and Ni(NO3)2 in your reactions for the respective ions. Show the correct phases of all species in the reactions for full credit.
Below is an analysis scheme for a mixture of Co2+, Cu²+, Fe3+, and Ni2+. You are asked for the formula of each cited precipitate and for the formula of the cation in the final solution. Include the net ionic chemical equations for the precipitation reactions. Step 1. In test tube 11, potassium nitrite acidified with acetic acid is added to the mixture of the four cations (the anion present is nitrate). A precipitate is produced. The aqueous solution is decanted...
6. Describe a method for how you would identify the components of your mixture using GC. (3 pts)
Problem 2: Non-reacting Ideal Gas Mixture (30 pts) 5 kmole/s of a mixture of carbon monoxide CO (40% molar) and Nz (60% molar) at 47°C and 2 bar (state 1) is mixed with of a mixture of carbon dioxide CO2 (55% molar) and N2 (45% molar) at 147°C (state 2) to obtain a mixture at state 3 with 77°C, The heat transfer to the surrounding is neglected. Determine: a) b) c) The mole flow rate n2 in kmole/s. (18 pts)...
question regarding separation using acid-base
extraction lab
Propose an extraction scheme to separate the mixture of following compounds shown below: (5 pts) COOH Br and
Propose an extraction scheme to separate the mixture of following compounds shown below: (5 pts) COOH Br and
betal Question 9 1 pts If you are given a mixture of three compounds like you were given in lab with the acetylferrocene/ferrocene mixture), what would be the proper order to separate and isolate those three compounds. 1st step Choose Run the column, collecting fractions in tared flasks Run a TLC of the three compounds in a fairly non-polar solvent such as hexanes Once the best eluent has been found, build a column using that event If the compounds are...
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