1. What is the correct voice to use when writing an introduction? Active Passive Voice doesn't...
1. What is the correct voice to use when writing an introduction?
Active
Passive
Voice doesn't matter
2. There is no standard convention What is the proper tense to use when summarizing experimental methods?
Simple Past
Simple Present
Simple Future
Complex Future
3. What filtration method is used in the malachite synthesis?
Gravity Filtration
Vacuum Filtration
Filtration is not performed
Any kind of filtration
4. What filtration method is used in the verdigris synthesis?
Vacuum filtration
Gravity Filtration
Any kind of filtration
It doesn't need to be filtered
Homework Answers
Add Answer to:
1. What is the correct voice to use when writing an
introduction?
Active
Passive
Voice doesn't...
CHROMIC ACID OXIDATION Pre Lab Questions the amounts of materials that will be used from the...
CHROMIC ACID OXIDATION Pre Lab Questions the amounts of materials that will be used from the experimental section above) H2SO4 + Na2Cr207 2H20- H2O, A Molecular Weight Theoretical yield amount moles on (if applicable) Equivalents 2. Look up the melting point for p-nitrobenzoic acid and record the reference. 3. What color change is expected to be observed in the reaction? Explain why. CHROMIC ACID OXIDATION Experimental Procedure: Part I: Synthesis of p-nitrobenzoic Acid 1. Under the hood, add 0.400 g...
Separating a Mixture, Recrystallization, pre-lab assignment could you also explain why you chose that substance for...
Separating a Mixture, Recrystallization, pre-lab
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could you also explain why you chose that substance for the empty
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EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...
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What is the percent recovery of the product? (weight of
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Given that the final mass of acetaminophen crystals= 0.320g, - What is the percent recovery or...
Given that the final mass of acetaminophen crystals=
0.320g,
- What is the percent recovery or your product?
- If this is above 100%, propose reasons for this. If not,
list possible sources for the loss lf product.
- What is the melting point (mp) of your product? The expected
mp is 170C. What can you say about the purity of your
product?
The
weight of the acetaminophen tablet is 500mg as stated in
step#15.
133 Experiment 11 Isolation of...
1) Which reactant, salicylic acid or acetic anhydride, is in excess? Show your work. 2) If you we...
1) Which reactant, salicylic acid or acetic anhydride, is in
excess? Show your work.
2) If you were to use 3.17 g of starting material, how much
product would you expect? Again, show your work.
3) Why is phosphoric acid added to the reaction?
4) A small amount of water is added at the end of the reaction
to react with the excess acetic anhydride. Show a balanced equation
for that reaction.
5) Explain the purpose of the FeCl3 test...
1. what is the purpose of the following in this experiment: a. concentrated (and not dilute)...
1. what is the purpose of the following in this
experiment:
a. concentrated (and not dilute) hydrochloric acid
b. collecting the distillate in ice
c. sodium bicarbonate extraction
d. water extraction
e. anhydrous sodium or magnesium sulfate
chapter Alkyl Halides and Nucleophilic Aliphatic Substitution 13.1 SYNTHESIS OF BUTYL CHLORIDE Alkyl halides can be prepared by reacting an alcohol with concentrated hydrogen halides: R-OH + H-X- R-OH, R-X. HO where X-CI, Br, I. The reaction of hydrochloric acid with 2 and...
Experiment Write Up Proposal You will write up a synthesis procedure for one reaction that could...
Experiment Write Up Proposal You will write up a synthesis procedure for one reaction that could be potentially run in a face- to-face Chem 2321 lab session. Your proposal will include an introduction and procedure. The procedure will include step-by-step instructions for running the reaction (including reaction monitoring), work-up. (product isolation and purification), and analysis (characterization). You will need to include sample calculations for percent yield and provide sample spectra analysis. You must upload your proposal as a single document...
CHROMIC ACID OXIDATION Pre Lab Questions the amounts of materials that will be used from the experimental section above) H2SO4 + Na2Cr207 2H20- H2O, A Molecular Weight Theoretical yield amount moles on (if applicable) Equivalents 2. Look up the melting point for p-nitrobenzoic acid and record the reference. 3. What color change is expected to be observed in the reaction? Explain why. CHROMIC ACID OXIDATION Experimental Procedure: Part I: Synthesis of p-nitrobenzoic Acid 1. Under the hood, add 0.400 g...
Separating a Mixture, Recrystallization, pre-lab
assignment
could you also explain why you chose that substance for the empty
spaces and question marks
EXPERIMENT 4 Pre-Lab Assignment Separating a Mixture, Recrystalliration Name Date 1. Complete the following flowchart which shows how to separate a mixture of sand, sodium chloride and acetanilide. Notice that after a separation process (a down arrow) the filtered solids are shown on the left and the filtrate (the liquid) is shown on the right. The terminal step...
What is the percent recovery of the product? (weight of
product, acetaminophen=0.320g)
EXPERIMENTAL PROCEDURE 1. Use a mortar and pestle to crush one tablet completely to powder. 2. Transfer the powder to a 5 ml. conical viale be sure to thoroughly scrape the residue from the mortar. 3. Add methanol to the 2 mL mark. 4. Cap the vial do not use an o-ring mix with an automatic mixer for 1 minute, and set aside to let the solids settle....
Given that the final mass of acetaminophen crystals=
0.320g,
- What is the percent recovery or your product?
- If this is above 100%, propose reasons for this. If not,
list possible sources for the loss lf product.
- What is the melting point (mp) of your product? The expected
mp is 170C. What can you say about the purity of your
product?
The
weight of the acetaminophen tablet is 500mg as stated in
step#15.
133 Experiment 11 Isolation of...
1) Which reactant, salicylic acid or acetic anhydride, is in
excess? Show your work.
2) If you were to use 3.17 g of starting material, how much
product would you expect? Again, show your work.
3) Why is phosphoric acid added to the reaction?
4) A small amount of water is added at the end of the reaction
to react with the excess acetic anhydride. Show a balanced equation
for that reaction.
5) Explain the purpose of the FeCl3 test...
1. what is the purpose of the following in this
experiment:
a. concentrated (and not dilute) hydrochloric acid
b. collecting the distillate in ice
c. sodium bicarbonate extraction
d. water extraction
e. anhydrous sodium or magnesium sulfate
chapter Alkyl Halides and Nucleophilic Aliphatic Substitution 13.1 SYNTHESIS OF BUTYL CHLORIDE Alkyl halides can be prepared by reacting an alcohol with concentrated hydrogen halides: R-OH + H-X- R-OH, R-X. HO where X-CI, Br, I. The reaction of hydrochloric acid with 2 and...
Experiment Write Up Proposal You will write up a synthesis procedure for one reaction that could be potentially run in a face- to-face Chem 2321 lab session. Your proposal will include an introduction and procedure. The procedure will include step-by-step instructions for running the reaction (including reaction monitoring), work-up. (product isolation and purification), and analysis (characterization). You will need to include sample calculations for percent yield and provide sample spectra analysis. You must upload your proposal as a single document...
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