What is the purpose of using a rotary evaporator during an organic synthesis? A. None of...
What is the purpose of using a rotary evaporator during an organic synthesis?
A. None of these answers are correct.
B. To separate drying agent from your product.
C. To ensure that the reaction goes to completion.
D.. To remove volatile solvents from your product.
Homework Answers
We are using rotary evaporator during an organic synthesis to remove volatile solvents from your product. So option D is correct.
Add Answer to:
What is the purpose of using a rotary evaporator during an
organic synthesis?
A. None of...
Recrystallization is commonly used in the organic laboratory as a way to: A) remove a reaction...
Recrystallization is commonly used in the organic laboratory as a way to: A) remove a reaction solvent. B) purify an organic liquid. C) separate the components of a liquid mixture. D) purify an organic solid. E) all of the above 1. What is a limiting reactant? A) reactant with the smallest initial mass B) reactant with the largest initial mass C) reactant that is completely consumed during a chemical reaction D) reactant that is NOT completely consumed during a chemical...
Question 1 1 pts What is the purpose of utilizing brine (saturated sodium chloride solution) during...
Question 1 1 pts What is the purpose of utilizing brine (saturated sodium chloride solution) during the liquid-liquid extraction portion of the bromohydrination of cyclohexene? To lower the solubility of organic molecules in the organic layer. To stabilize the carbocation formed during the course of the reactions. To remove excess water from the organic layer of the reaction. To ensure that enough water is present for the reaction to generate an alcohol. Question 2 1 pts Which of the following...
Explain what is the purpose of the following reagents/procedural steps in the synthesis of acetaminophen by...
Explain what is the purpose of the following reagents/procedural steps in the synthesis of acetaminophen by reacting p-aminophenol with acetic anhydride: a. Phosphoric acid b. Placing the reaction flask in warm water c. Purpose for placing crude product of acetaminophen in a 100 ml beaker with 20 ml of water, then heat it on a hot plate until crystals dissolves then let cool. Then having it in an ice bath for 20 min once crystals appeared. d. Drying product at...
This procedure was conducted for diethyl n-butylmalonate. The question is: What is the purpose of the...
This procedure was conducted for diethyl n-butylmalonate. The
question is: What is the purpose of the tricaprylmethylammonium
chloride and why is it used in a nomstoichiometric?
Chapter 42 Malonic Ester of a Barbiturate 541 Into a 5-mL long-necked, round-bottomed flask, weigh 40 mg of tricaprylmethylammonium chloride, 400 mg of diethyl malonate, 350 mg of 1-bromobutane, and 415 mg of anhydrous potassium carbonate. Attach the empty distillation column as an air condenser and reflux the mixture for 1.5 hours (Fig. 42.1)....
What is the purpose of adding 50% sodium hydroxide solution in Wittig reaction.
Question 13 What is the purpose of adding 50% sodium hydroxide solution in Wittig reaction. A) reactant B) recrystallization C) deprotonation D) Solvent Question 14 What is the purpose of anhydrous calcium chloride pellets in wittig reaction. A) Drying aqueous layer B) Reactant C) Reagent D) Drying organic layer Question 15 Provide the structure of the ylide needed to prepare 3-ethyl-3-heptene from 3-pentanone using a Wittig reaction.
Extraction Q1. Why doesn’t the neutral organic compound dissolve in the 1.5 M NaOH solution? Q2....
Extraction Q1. Why doesn’t the neutral organic compound dissolve in the 1.5 M NaOH solution? Q2. Why is diethyl ether a good choice for the organic solvent in this extraction experiment? Q3. What experimental difficulty would you encounter if you neglected to include the drying step before evaporating the ether solution of the neutral organic compound? Q4. Why are the two organic compounds recrystallized before their melting points are determined? Q5. What IR bands are most useful in distinguishing a...
Dibenzalacetone Synthesis PURPOSE: purpose of this lab exercise is to synthesize dibenzalacetone by means of an...
Dibenzalacetone Synthesis PURPOSE: purpose of this lab exercise is to synthesize dibenzalacetone by means of an aldol condition. INTRODUCTION: Wow, is it wet in here or what? That's what happens when you condense, right? No, that is not right, you say! You can condense things without getting wet in organic chemistry. Think about aldol condensations, you tell me. Yes. yes..of course you are correct: organic condensations dont get you wet. They get you a new product. Silly me Aldol condensation...
Lab : Aldol Condensation Purpose. In this lab you will conduct the Aldol condensation reaction under solid-state...
Lab : Aldol Condensation Purpose. In this lab you will conduct the Aldol condensation reaction under solid-state reaction conditions that will involve grinding reactants in the solid phase. You must read ahead and learn about this reaction and the chemical mechanism for the Aldol condensation. There are two possible products which are the initial Aldol or subsequent elimination product. You will need to isolate and purify your reaction product. You will use your melting point, IR, 1H and 13C NMR spectra to...
Question to answer from the lab: What aspect(s) of the approach taken is/are NOT especially green?...
Question to answer from the lab: What aspect(s) of the approach taken is/are NOT especially green? What changes might be made to make the overall process greener? The Lab Experiment Summary Polyethylene glycols such as PEG-400 are currently of great interest to organic chemists, since their application as reaction solvents is very intriguing (1). PEG-400 is non-volatile and nonflammable in nature, and also possesses important properties such as recyclability, ease of work-up, thermal stability and economical cost. In addition, the...
pre-laboratory Questions A 1 Explain why it is more efficient to make several extractions using small...
pre-laboratory Questions A 1 Explain why it is more efficient to make several extractions using small portions rather than one extraction using the same total volume. 2 Define the following terms: Drying agent intensity Drying agent capacity 3 Select the upper layer in each pair of mixed solvents (see Appendix C): Water and benzene Water and carbon tetrachloride Water and ether 4 Write an equation for the reaction of a benzoic acid with aqueous sodium bicarbonate. 5 Complete the following...
Recrystallization is commonly used in the organic laboratory as a way to: A) remove a reaction solvent. B) purify an organic liquid. C) separate the components of a liquid mixture. D) purify an organic solid. E) all of the above 1. What is a limiting reactant? A) reactant with the smallest initial mass B) reactant with the largest initial mass C) reactant that is completely consumed during a chemical reaction D) reactant that is NOT completely consumed during a chemical...
Question 1 1 pts What is the purpose of utilizing brine (saturated sodium chloride solution) during the liquid-liquid extraction portion of the bromohydrination of cyclohexene? To lower the solubility of organic molecules in the organic layer. To stabilize the carbocation formed during the course of the reactions. To remove excess water from the organic layer of the reaction. To ensure that enough water is present for the reaction to generate an alcohol. Question 2 1 pts Which of the following...
This procedure was conducted for diethyl n-butylmalonate. The
question is: What is the purpose of the tricaprylmethylammonium
chloride and why is it used in a nomstoichiometric?
Chapter 42 Malonic Ester of a Barbiturate 541 Into a 5-mL long-necked, round-bottomed flask, weigh 40 mg of tricaprylmethylammonium chloride, 400 mg of diethyl malonate, 350 mg of 1-bromobutane, and 415 mg of anhydrous potassium carbonate. Attach the empty distillation column as an air condenser and reflux the mixture for 1.5 hours (Fig. 42.1)....
Dibenzalacetone Synthesis PURPOSE: purpose of this lab exercise is to synthesize dibenzalacetone by means of an aldol condition. INTRODUCTION: Wow, is it wet in here or what? That's what happens when you condense, right? No, that is not right, you say! You can condense things without getting wet in organic chemistry. Think about aldol condensations, you tell me. Yes. yes..of course you are correct: organic condensations dont get you wet. They get you a new product. Silly me Aldol condensation...
Most questions answered within 3 hours.
-
Rice Products in Bangladesh
Business behavior is derived in large part from the basic cultural
environment...
asked 29 minutes ago -
The following base sequence is found for a mRNA fragment from
wild-type E. coli: 5'- UAUCAGUAGAUAAUGUAACC-3'...
asked 52 minutes ago -
For this exercise, round all regression parameters to three
decimal places.
One of the two tables...
asked 1 hour ago -
What is the 5% level of significance for mean = 3.60, standard
deviation = 0.94, and...
asked 1 hour ago -
Prior to beginning work on this discussion, please read the
article by Hayley Peterson, 15 Companies...
asked 1 hour ago -
Which pair of aqueous solutions, when mixed, will form a
precipitate?
A) NaNO3 and AgC2H3O2
B)...
asked 2 hours ago -
1-Write an algorithm to get two numbers from the user (as
inputs) and calculate the sum...
asked 5 hours ago -
Define white-collar crime. What is the difference between
offender and offense-based definitions of white-collar crime? What...
asked 6 hours ago -
Consider a reaction which is 1st order with respect to A and 1st
order with respect...
asked 6 hours ago -
c++
The length of the hypotenuse of a right-angled triangle is the
square root of the...
asked 6 hours ago -
When a metal rod is heated, not only its resistance but also its
length and cross‐sectional...
asked 6 hours ago -
write a c++ program that computes the L^1 - Norm of a given
vector (L^1 norm...
asked 6 hours ago