A lab group thinks they may have added more KI than was necessary. How could they...
A lab group thinks they may have added more KI than was necessary. How could they test the filtrate containing KNO3 in order to determine if they did add excess KI?
Homework Answers
The answer is quite simple . Just put some starch into the solution . If there is extra KI then starch will turn into blue-black colour.
(The above method is used for iodine test.)
Add Answer to:
A lab group thinks they may have added more KI than was
necessary. How could they...
Qualitative Analysis of Group I Cations: Precipitation and Separation of Group I lons Nam Partner's Name...
Qualitative Analysis of Group I Cations: Precipitation and Separation of Group I lons Nam Partner's Name of any) Lab Section MWITH THE Advance Study Assignment 1. The reagent (chemical substance used) to precipitate the all the cations of Group _(symbol and molarity 2. Why do we add an additional drop of the precipitating to the Group I precipitate formed? 3. When we centrifuge why must we use a blank test tube (containing an equal volume of water) on the opposite...
lab report on the preparation of soap (Saponification) 1. Write the reaction for the saponification of...
lab report on the preparation of soap
(Saponification)
1. Write the reaction for the saponification of glyceryl tripalmitate with sodium 2. 3. 4. hydroxide. Why is the product of saponification called a salt? Why was ethanol added to the reaction mixture of fat and base? Do you think the solid soap that you made contains glycerol? Why or why not? Explain. 5. Describe the appearance of your soap. 6. Explain how soaps emulsify oils and fats. 7. Explain why soaps...
synthesis show how the immune could be prepared from benzene propanoic acid and dimethylamine. More than...
synthesis show how the immune could be prepared from benzene
propanoic acid and dimethylamine. More than one synthetic
transformation will be necessary
give all possible structures of the product C 10 H 1203 form
by intermolecular placing condensation of the keto Ester shown
below
ps * Bookmarks Gmail YouTube Maps Ch15: Oxidation o. 5. Synthesis: Show how the amine could be prepared from benzene, propanoic acid and dimethyl amine. More than one synthetic transformation will be necessary. You have unlimited...
how would i write an equation explaining how i confirmed that sulfate was present in my...
how
would i write an equation explaining how i confirmed that sulfate
was present in my product. in order to confirm this we added BaCl
to our product
equation: 2Al(s) + 2KOH(aq) + 4H2sO4 + 22H2O --> 2KAl(SO4)2
• 12H2O + 3H2(g)
how would i do this?
3. What is one possible test you could have done to determine if Ki is present in your prod- uct? Write an equation to represent the outcome of this test if ki is...
Question 1: This question may be completed independently or as a group exercise. You have learned...
Question 1: This question may be completed independently or as a group exercise. You have learned that humans have 46 total chromosomes, and chimpanzees have 48 total chromosomes. Use other textbooks in biological anthropology and biology (or reputable online resources) to find the number of chromosomes in other organisms. Give an organism with considerably more chromosomes than humans. Give an organism with considerably fewer chromosomes than humans. Did your findings surprise you? What did your research suggest about the relationship...
Lab procedure: This laboratory exercise involves the use of dilute sulfuric acid (H2SO4) to leach...
Lab procedure: This laboratory exercise involves the use of dilute sulfuric acid (H2SO4) to leach copper from a synthetic copper-containing ore, malachite. This technique is known in the mining industry as solution mining. The soluble copper is then filtered to remove unreacted ore (the residue) from the filtrate containing the copper+2 ion. The copper in the filtrate is then treated with metallic magnesium to precipitate the copper as the familiar orange-brown metal. This copper is dried and weighed. From these...
I'm in serious need of help. I worked on the Qualitative Analysis of Cations Lab, Groups...
I'm in serious need of help. I worked on the Qualitative Analysis of Cations Lab, Groups I and II. For group I, the possible Ions in a solution were Ag+1, Pb+2, Hg2+2. I was able to sucessfully percipitate out and confirm the presense of Silver. For Group II, the possible Ions were Hg2+, PB2+, Bi2+, Cu2+. The problem is I should have percipitated out three Cations and only found one. I know with certainty that I did not have Mercury...
IDENTIFICATION of an UNKNOWN ORGANIC COMPOUND PRE LAB QUESTIONS DATE NAME 1. Circle AND name four...
IDENTIFICATION of an UNKNOWN ORGANIC COMPOUND PRE LAB QUESTIONS DATE NAME 1. Circle AND name four different functional groups in the compound to the right Macrocyclic lactone ring н сн N сн но. Нас Cн, O HO -O -он CH3 Hyc-OH CH3 Cн HyC OCH OH CH CH3 "сна 2. You have an unknown containing five carbon atoms, has a pH of 6, yields a yellow solution having no precipitate in a 2,4-DNP test, and produces a Jell-O like blue-green...
Suggest how you would carry out the following syntheses, showing all reagents necessary. More than one...
Suggest how you would carry out the following syntheses, showing all reagents necessary. More than one reaction may be involved.
Questions on a pre lab for Kinetics: the Iodine Clock Reaction 2. How could one determine...
Questions on a pre lab for Kinetics: the Iodine Clock
Reaction
2. How could one determine that the Cu on in the catalyst is the active species, rather than the 2+ nitrate ion? Give a specific example of a reagent you might use in another reaction trial in order to verify that the Cu2 is the active species.
Qualitative Analysis of Group I Cations: Precipitation and Separation of Group I lons Nam Partner's Name of any) Lab Section MWITH THE Advance Study Assignment 1. The reagent (chemical substance used) to precipitate the all the cations of Group _(symbol and molarity 2. Why do we add an additional drop of the precipitating to the Group I precipitate formed? 3. When we centrifuge why must we use a blank test tube (containing an equal volume of water) on the opposite...
lab report on the preparation of soap
(Saponification)
1. Write the reaction for the saponification of glyceryl tripalmitate with sodium 2. 3. 4. hydroxide. Why is the product of saponification called a salt? Why was ethanol added to the reaction mixture of fat and base? Do you think the solid soap that you made contains glycerol? Why or why not? Explain. 5. Describe the appearance of your soap. 6. Explain how soaps emulsify oils and fats. 7. Explain why soaps...
synthesis show how the immune could be prepared from benzene
propanoic acid and dimethylamine. More than one synthetic
transformation will be necessary
give all possible structures of the product C 10 H 1203 form
by intermolecular placing condensation of the keto Ester shown
below
ps * Bookmarks Gmail YouTube Maps Ch15: Oxidation o. 5. Synthesis: Show how the amine could be prepared from benzene, propanoic acid and dimethyl amine. More than one synthetic transformation will be necessary. You have unlimited...
how
would i write an equation explaining how i confirmed that sulfate
was present in my product. in order to confirm this we added BaCl
to our product
equation: 2Al(s) + 2KOH(aq) + 4H2sO4 + 22H2O --> 2KAl(SO4)2
• 12H2O + 3H2(g)
how would i do this?
3. What is one possible test you could have done to determine if Ki is present in your prod- uct? Write an equation to represent the outcome of this test if ki is...
IDENTIFICATION of an UNKNOWN ORGANIC COMPOUND PRE LAB QUESTIONS DATE NAME 1. Circle AND name four different functional groups in the compound to the right Macrocyclic lactone ring н сн N сн но. Нас Cн, O HO -O -он CH3 Hyc-OH CH3 Cн HyC OCH OH CH CH3 "сна 2. You have an unknown containing five carbon atoms, has a pH of 6, yields a yellow solution having no precipitate in a 2,4-DNP test, and produces a Jell-O like blue-green...
Suggest how you would carry out the following syntheses, showing all reagents necessary. More than one reaction may be involved.
Questions on a pre lab for Kinetics: the Iodine Clock
Reaction
2. How could one determine that the Cu on in the catalyst is the active species, rather than the 2+ nitrate ion? Give a specific example of a reagent you might use in another reaction trial in order to verify that the Cu2 is the active species.
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