Question
give a laboratory procedure for the preparation of an symmetrical anhydride that produces water as a...
give a laboratory procedure for the preparation of an
symmetrical anhydride that produces water as a biproduct?
Homework Answers
Answer #1
carboxylic acid anhydrides are compounds that formally consist of two condensed carboxylic acid molecules.
By heating of two molecules of a carboxylic acid in such a way as to remove or extract (from them) one molecule of water, an acid anhydride may be formed
Not the answer you're looking for?
Similar Questions
Consider the preparation of acetylsalicylic acid (aspirin), by reacting salicylic acid with acetic anhydride. A reaction...
Consider the preparation of acetylsalicylic acid (aspirin), by
reacting salicylic acid with acetic anhydride.
A reaction was performed in which 2.05 g of salicylic
acid was reacted with an excess of acetic anhydride in the
presence of phosphoric acid to make 1.82 g of
acetylsalicylic acid (aspirin).
Calculate the theoretical yield and percent yield for
this reaction.
Aspirin can be made in the laboratory by reacting acetic anhydride (C4H6O3) with salicylic acid (C7H6O3)...
Aspirin can be made in the laboratory by reacting acetic
anhydride (C4H6O3) with salicylic acid (C7H6O3) to form aspirin
(C9H8O4) and acetic acid (C2H4O2). The balanced equation is
C4H6O3+C7H6O3→C9H8O4+C2H4O2 In a laboratory synthesis, a student
begins with 2.80 mL of acetic anhydride (density=1.08g/ml) and 1.24
g of salicylic acid. Once the reaction is complete, the student
collects 1.21 g of aspirin.
Part A) Determine the limiting reactant for the reaction.
acetic anhydride or salicylic acid
Part B) Determine the theoretical...
A laboratory procedure is used to measure the level of cadmium in soil. It is applied...
A laboratory procedure is used to measure the level of cadmium
in soil. It is applied to a specimen that has a controlled level of
1.5 μg/g of cadmium. Three measurements are obtained by splitting
the specimen into three parts of equal weight and applying the
procedure to each part. Here are the results: 1.64, 1.85, and 1.94.
(a) Does a 95% confidence interval give an indication that the
laboratory procedure may be biased? b. What are your assumptions
that...
what are the laboratory safety hazards associated with the procedure of diagnosing unknown bacteria?
what are the laboratory safety hazards associated with the
procedure of diagnosing unknown bacteria?
Give examples of the following relationships: a) A transitive and symmetrical relationship, but not reflexive. b)...
Give examples of the following relationships:
a) A transitive and symmetrical relationship, but not
reflexive.
b) A symmetric and reflexive relationship, but not
transitive.
c) An antisymmetric and thoughtless relationship.
1. How many moles are in 9.6 mL of acetic anhydride, density of 1.082? Give two...
1. How many moles are in 9.6 mL of acetic anhydride, density of
1.082? Give two significant figures. Given molecular weight: 102
g
2. As a "rule of thumb" there are 20 drops of a liquid in a mL.
Using this estimate and a density of 1.685, how many moles are in 9
drops of 85 % by weight phosphoric acid? Give two significant
digits. Given molecular weight: 98 g
3. Starting with 9.6 g of salicylic acid, how many...
The reaction in the experiment was salicylic acid with acetic anhydride (catalyzed by h2so4) to produce...
The reaction in the experiment was salicylic acid with acetic
anhydride (catalyzed by h2so4) to produce aspirin and acetic
acid.
2. Describe and explain the possible effect on your results of
the following experimental errors. (8 points)
(a) The reagent bottle labeled “acetic anhydride”
actually contained acetic acid.
(b) You boiled the recrystallization mixture after
adding water.
4. Briefly comment on how H2SO4 catalyzes
today’s reaction that produces
aspirin. (4 points)
1- Describe the main differences in HMA mixture preparation between “laboratory prepared” and “plant produced” specimens....
1- Describe the main differences in HMA mixture preparation
between “laboratory prepared” and
“plant produced” specimens.
2- Describe how we determine the number of gyrations to be applied
to a specimen for the
purpose of volumetrics determination.
A student is synthesizing 1-bromobutane using the same procedure that you will in the laboratory. If...
A student is synthesizing 1-bromobutane using the same procedure
that you will in the laboratory. If the student started with 0.248
g of 1-butanol and recovers 0.379 g of 1-bromobutane, what is the
student's percent yield? (provide your answer to the nearest tenth
of a percent)
The preparation of a bank reconciliation is an important cash control procedure. If a company deposits...
The preparation of a bank reconciliation is an important cash
control procedure. If a company deposits cash receipts daily and
makes all cash disbursements by check, explain why the cash balance
per books might not agree with the cash balance shown on the bank
statement. Identify specific examples that may cause differences
between the cash balance per books and the cash balance per
bank.
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 12 minutes ago
asked 14 minutes ago
asked 19 minutes ago
asked 23 minutes ago
asked 32 minutes ago
asked 38 minutes ago
asked 43 minutes ago
asked 44 minutes ago
asked 51 minutes ago
asked 1 hour ago
asked 1 hour ago
asked 2 hours ago