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4. Why might it not be necessary to perform a confirmation test for certain Group III...
3. What is the oxidation state of chromium in PbCrO4? 4. Why might it not be necessary to perform a confirmation te...
3. What is the oxidation state of chromium in PbCrO4? 4. Why might it not be necessary to perform a confirmation test for certain Group III metal ions?
5. Consider the carbonate ion test that you might perform on a typical +2 metal carbonate...
5. Consider the carbonate ion test that you might perform on a typical +2 metal carbonate as an equilibrium: MH20 +CO a) Based on this equilibrium and the observed (limited) solubility of C02 in water, predict the outcome of bubbling C02 gas through solutions of each of the three +1/+ 2 cations studied in this experiment. Justify your prediction In light of your answer to part (a) of this question, explain why a solution of Zn (H20)2 (0H)4 upon treatment...
5. Iron(III) ions are used as a qualitative test for phenols (aromatic compounds containing an-OH functional group)...
5. Iron(III) ions are used as a qualitative test for phenols (aromatic compounds containing an-OH functional group). (1 point) a. What compound was used as a positive control for the Fe3+ test in this experiment? b. Did the reaction product give a positive or negative test with Fe3+ ions? Explain. 6. Acetic anhydride was used in excess in this experiment. What does this mean, and how was the excess acetic anhydride decomposed at the end of the reaction? (1 point)
Why is it necessary to standardize a indophenol solution? Why is it necessary to titrate blank samples? Why might the Vi...
Why is it necessary to standardize a indophenol solution? Why is it necessary to titrate blank samples? Why might the Vitamin C content be underestimated in the case of a heat processed juice sample?
1. What distinguish a transition metal from a main group metal? 2. Why is zinc not...
1. What distinguish a transition metal from a main group metal? 2. Why is zinc not considered a transition metal? 3. Write the electronic configuration of the following ions; V". Cr, Mn, Fe, Ni, Ti" 4. What are basic assumptions of Crystal Field Theory? 5. Compounds containing the Scion are colorless whereas those containing Ti* ion are colored. Explain. 6. Predict the number of unpaired electrons in [Cr(en) ions. 7. What are spectrochemical series? 8. The compound hexaminecobalt(III) chloride is...
synthsis of asprin 6. Iron(III) ions are used as a qualitative test for phenols (aromatic compounds...
synthsis of asprin
6. Iron(III) ions are used as a qualitative test for phenols (aromatic compounds containing an -OH functional group). (1 point) a. What compound was used as a positive control for the Fe3+ test in this experiment? b. Did the reaction product give a positive or negative test with Fetions? Explain. 6. Iron(III) ions are used as a qualitative test for phenols (aromatic compounds containing an-OH functional group). (1 point) a. What compound was used as a positive...
4. Determine the MPN per 100 mL for the following LT presumptive test and confirmation test...
4. Determine the MPN per 100 mL for the following LT presumptive test and confirmation test with BGBs. The dilutions used for the LT tests are respectively: 1:100; 1:1,000 and 1:10,000.
Describe the reasons why an IT group might create role-related access limitations related to reading data,...
Describe the reasons why an IT group might create role-related access limitations related to reading data, editing content, or executing certain programs on a server.
Why is it necessary to perform the reaction of Fe with S8 solution under a fume...
Why is it necessary to perform the reaction of Fe with S8
solution under a fume
REAC 422 Saying Chemical Reaction and Writing Chemica ls 1111 Pre-Laboratory Assignment 1. Briefly answer the following questions about some of the procedures you will be using in this experiment. (1) Why would it be dangerous to perform Part 1 of the procedure of this experiment close to a lighted Bunsen burner? (4) Although the crucible is covered while heating in Part Ill of...
In purification of crystal violet, why is it necessary to perform a serial dilution before determining...
In purification of crystal violet, why is it necessary to perform a serial dilution before determining the absorbance using UV-Vis?
3. What is the oxidation state of chromium in PbCrO4? 4. Why might it not be necessary to perform a confirmation test for certain Group III metal ions?
5. Consider the carbonate ion test that you might perform on a typical +2 metal carbonate as an equilibrium: MH20 +CO a) Based on this equilibrium and the observed (limited) solubility of C02 in water, predict the outcome of bubbling C02 gas through solutions of each of the three +1/+ 2 cations studied in this experiment. Justify your prediction In light of your answer to part (a) of this question, explain why a solution of Zn (H20)2 (0H)4 upon treatment...
5. Iron(III) ions are used as a qualitative test for phenols (aromatic compounds containing an-OH functional group). (1 point) a. What compound was used as a positive control for the Fe3+ test in this experiment? b. Did the reaction product give a positive or negative test with Fe3+ ions? Explain. 6. Acetic anhydride was used in excess in this experiment. What does this mean, and how was the excess acetic anhydride decomposed at the end of the reaction? (1 point)
1. What distinguish a transition metal from a main group metal? 2. Why is zinc not considered a transition metal? 3. Write the electronic configuration of the following ions; V". Cr, Mn, Fe, Ni, Ti" 4. What are basic assumptions of Crystal Field Theory? 5. Compounds containing the Scion are colorless whereas those containing Ti* ion are colored. Explain. 6. Predict the number of unpaired electrons in [Cr(en) ions. 7. What are spectrochemical series? 8. The compound hexaminecobalt(III) chloride is...
synthsis of asprin
6. Iron(III) ions are used as a qualitative test for phenols (aromatic compounds containing an -OH functional group). (1 point) a. What compound was used as a positive control for the Fe3+ test in this experiment? b. Did the reaction product give a positive or negative test with Fetions? Explain. 6. Iron(III) ions are used as a qualitative test for phenols (aromatic compounds containing an-OH functional group). (1 point) a. What compound was used as a positive...
4. Determine the MPN per 100 mL for the following LT presumptive test and confirmation test with BGBs. The dilutions used for the LT tests are respectively: 1:100; 1:1,000 and 1:10,000.
Why is it necessary to perform the reaction of Fe with S8
solution under a fume
REAC 422 Saying Chemical Reaction and Writing Chemica ls 1111 Pre-Laboratory Assignment 1. Briefly answer the following questions about some of the procedures you will be using in this experiment. (1) Why would it be dangerous to perform Part 1 of the procedure of this experiment close to a lighted Bunsen burner? (4) Although the crucible is covered while heating in Part Ill of...
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