Why do you think diffrent volumes of acetic anhydride were used in the diffent ester sysnthesis...
Why do you think diffrent volumes of acetic anhydride were used in the diffent ester sysnthesis even though the same volume of alcohol was used for each?
Homework Answers
The reaction between acetic anhydride and alcohol occurs in 1:1 mole ratio. Even thoughthe volume of alcohol is constant, the mass of the alcohols are different. Because mass = volume * density. Different alcohols have different densities and hence same volume of alcohols have different masses as well different moles.
As, different moles of alcohols are used , the moles of acetic anhydride will be required accordingly. Mass = Mole * Molar mass. So, for different tests with varying alcohols, mass of the anhydride required will be different and subsequently you have to take different volumes of the anhydride.
Volume = Mass/ density
Add Answer to:
Why do you think diffrent volumes of acetic anhydride were used
in the diffent ester sysnthesis...
If 1.4 g of salicylic acid and 3.1 g of acetic anhydride were used, how much...
If 1.4 g of salicylic acid and 3.1 g of acetic anhydride were used, how much water (mL) would be required to decompose the remaining acetic anhydride during the synthesis of aspirin? (However, the reaction is assumed to proceed 100%, ignoring the amount of water in the phosphoric acid.)
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...
2. If one were esterifying an expensive alcohol with an expensive carboxylic acid derivative, would it...
2. If one were esterifying an expensive alcohol with an expensive carboxylic acid derivative, would it be wiser to use the acid chloride or acid anhydride reagent? Why? 3. Why is so much NaOH used in the extraction? Recall that only four drops (small amount) of sulfuric acid were used as a catalyst. Esters are an important class of organic molecules, which are formally derived from alcohols and carboxylic acids. Esters occur widely in nature and are often an important...
please help me ! do you think this is good so far ? Results/Data • Aspirin...
please help me ! do you think this is good so far ?
Results/Data • Aspirin synthesis salicylic acid: 2.0 g Acetic anhydride: 2 mL d= 1.082g/mL sodium acetate: 0.4 g • Experimental yield of aspirin: 2.4 g FORMATION OF ESTERS II. PREPARATION OF ACETYL SALICYLIC ACID (ASPIRIN): 1 Complete the table below by entering appropriate values into the empty boxes. Show calculations for all entries clearly below. Reactants Chemical MW Grams of Moles of Moles of Limiting Melting Formula...
Suppose you started with 25.8 g of salicylic acid and an excess of acetic anhydride was...
Suppose you started with 25.8 g of salicylic acid and an excess of acetic anhydride was used to synthesize aspirin. If you obtained 21.7 g of aspirin, calculate the yield of this reaction. (Show your detailed calculations) (1.5 Points) 3. After carrying out the aspirin synthesis experiment, suggest two experiments or techniques (give only name of Experiment) based on what you have learned last few weeks to confirm the preparation and purity of aspirin. (1 Point) 4. A commercial aspirin...
Not sure what to do, please help and be detailed. Thank you You have learned several...
Not sure what to do, please help and be detailed. Thank you
You have learned several ways to make an ester from an alcohol (or phenol). Suggest an alternate reaction that would make acetylsalicylic acid from salicylic acid that does not involve acetic anhydride. (4 points)
Why do you think formatting and citation systems like APA were created? Why do you think...
Why do you think formatting and citation systems like APA were created? Why do you think this course is taking it so seriously and grading it so strictly? What benefit can you see for your paper? 200 to 300 words in the answer
2. Suppose you started with 25.8 g of salicylic acid and an excess of acetic anhydride...
2. Suppose you started with 25.8 g of salicylic acid and an excess of acetic anhydride was used to synthesize aspirin. If you obtained 21.7 g of aspirin, calculate the yield of this reaction. (Show your detailed calculations) (1.5 Points) 3. After carrying out the aspirin synthesis experiment, suggest two experiments or techniques (give only name of Experiment) based on what you have learned last few weeks to confirm the preparation and purity of aspirin. (1 Point) 4. A commercial...
In HBR Tokyo DisneySea case, why do you think OL undertook the project even though their...
In HBR Tokyo DisneySea case, why do you think OL undertook the project even though their decision was not supported by their own method? (Trick question, be careful)
Why do you think business schools historically have mainly taught NPV even though IRR has been...
Why do you think business schools historically have mainly taught NPV even though IRR has been shown to be more popular?
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...
2. If one were esterifying an expensive alcohol with an expensive carboxylic acid derivative, would it be wiser to use the acid chloride or acid anhydride reagent? Why? 3. Why is so much NaOH used in the extraction? Recall that only four drops (small amount) of sulfuric acid were used as a catalyst. Esters are an important class of organic molecules, which are formally derived from alcohols and carboxylic acids. Esters occur widely in nature and are often an important...
please help me ! do you think this is good so far ?
Results/Data • Aspirin synthesis salicylic acid: 2.0 g Acetic anhydride: 2 mL d= 1.082g/mL sodium acetate: 0.4 g • Experimental yield of aspirin: 2.4 g FORMATION OF ESTERS II. PREPARATION OF ACETYL SALICYLIC ACID (ASPIRIN): 1 Complete the table below by entering appropriate values into the empty boxes. Show calculations for all entries clearly below. Reactants Chemical MW Grams of Moles of Moles of Limiting Melting Formula...
Not sure what to do, please help and be detailed. Thank you
You have learned several ways to make an ester from an alcohol (or phenol). Suggest an alternate reaction that would make acetylsalicylic acid from salicylic acid that does not involve acetic anhydride. (4 points)
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago