Organic chemistry lab question a. Calculate the partition coefficient of benzoic acid from the following data:...
Organic chemistry lab question
a. Calculate the partition coefficient of benzoic acid from the following data: 1g of benzoic acid was dissolved in 30mL water and 30mL toluene. evaporation of 1mL toluene yielded 0.030g of benzoic acid.
b. Assume you dissolve 1g of benzoic acid in 30mL water, and wish to extraxt as much benzoic acid form water as possible. Is it more producrtive to extract: i) once with 60 mL toluene ii) twice with 30mL toluene. justify your answer
Homework Answers
Add Answer to:
Organic chemistry lab question
a. Calculate the partition coefficient of benzoic acid from the
following data:...
If the Partition Coefficient for Benzoic Acid in one mL each of Water and Methylene Chloride...
If the Partition Coefficient for Benzoic Acid in one mL each of Water and Methylene Chloride is 2.10, is there more Benzoic Acid in the Water layer or the Methylene Chloride layer? A) If you have one mL each of Water and Methylene Chloride in a vial, which layer is on the top? B) If the same experiment is repeated with benzoic acid between ether and water, which layer would be the top and which layer would be the bottom....
Organic chemistry question 4. Benzoic acid is almost 12 times more soluble in dichloromethane than in...
Organic chemistry question
4. Benzoic acid is almost 12 times more soluble in dichloromethane than in water at room temperature (the distribution coefficient (K) is 11.7). a) Approximately how many grams of benzoic acid would be recovered in the organic layer if 10.0 g of benzoic acid dissolved in 100 mL of water was extracted with 100 mL of dichloromethane? Show calculations. b) Approximately how many grams of benzoic acid would be recovered if the water layer was extracted a...
Suppose a 35 mg of benzoic acid is dissolved in 7ml of dichloromethane. The resulting organic...
Suppose a 35 mg of benzoic acid is dissolved in 7ml of dichloromethane. The resulting organic solution is then extracted with 12 ml of water. It is determined that the dichloromethane layer now contains 31 mg of benzoic acid. A. What is the partition coefficient (kp) of benzoic acid in dicholomethane/water? Please show work! B. Between dichloromethane and water, in which solvent is the benzoic acid more soluble?
Let's assume you have a mixture of equal parts benzoic acid, sand and toluene that are...
Let's assume you have a mixture of equal parts benzoic acid, sand and toluene that are intimately mixed together (the crude material is a mixture of solid and liquid). Propose a procedure to separate these three components using any of the chemicals commonly available (you've used all of the "common" chemicals in the lab by now) in the organic chemistry teaching laboratories and observing the typical limitations with the instruments and techniques (such as not being able to distill or...
The following questions are from an experiment titled Friedel-Crafts Alkylation for Organic Chemistry II Lab. There...
The following questions are from an experiment titled
Friedel-Crafts Alkylation for Organic Chemistry II Lab. There are
pictures attached of the lab manual.
2) Is this method a good route for the preparation of
p-sec-butyltoulene? Give reasons for your answer.
3) Why do you use a large excess of toulene. What are its
functions?
4) What is the purpose for adding the hydrochloric acid to the
water in the separatory funnel in step 5? Hint: If no acid is
added,...
Organic Chemistry Lab question In the experiment we did acid-base extractions to find impurities. The impurity...
Organic Chemistry Lab question In the experiment we did acid-base extractions to find impurities. The impurity was either benzoic acid (acid) or 4-chloroaniline (base) So in this experiment we did Acid-Base extraction with an unknown compound. So we had an unknown of 0.150 grams and mixed it with 20 mL of diethyl ether. We placed this in a separatory funnel and added 2mL of 1.0 NaOH solution to the separatory funnel and placed the stopper over the top of the...
Organic chemistry -Carboxylic acid homework Question: In the general chemistry lab, students synthesize aspirin from salicylic...
Organic chemistry -Carboxylic acid homework
Question: In the general chemistry lab, students synthesize
aspirin from salicylic acid and acetic anhydride. In the lab,
students use sulfuric acid as a catalyst, but I want to consider an
alternate method for synthesizing aspirin using sodium acetate as a
catalyst:
a. Draw the structure of sodium acetate. Is sodium acetate a
stronger or weaker base than sodium hydroxide (NaOH). Explain. (1.5
pts)
b. Consider the structure of salicylic acid. It contains two
potentially...
we have 1.5 g final product for following experiment. how can I draw acid- base curve...
we have 1.5 g final product for following experiment. how can I draw acid- base curve for following experiment? Experimental procedure Weigh approximately 2.5 gof benzoic acid contaminated withtable salt (NaCl) as precisely as possible (record the exact quantity). Transfer the solid to a 100 mL separatory funnel and add 30 mL of ethyl acetate. In a 50 mL beaker, add 20 mL of water and 1.0 mL of 3 M hydrochloric acid. Transferthe mixtureto the separatory funnel. The solid...
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...
Organic chemistry post-lab question: "Why is important to add the alkyl halide dropwise in your reaction?...
Organic chemistry post-lab question: "Why is important
to add the alkyl halide dropwise in your reaction? (Hint: your
reaction is not heated, but you still need a water-cooled
condenser!)" Please answer in detail!
Here is a copy of the experiment, thank you!
The Grignard reaction is an important synthetic process by which a carbon-carbon bond is formed. Magnesium metal is first reacted with an organic halide. The resultant organo-magnesium halide (Grignard reagent) is then combined with a carbonyl compound, ultimately...
Organic chemistry question
4. Benzoic acid is almost 12 times more soluble in dichloromethane than in water at room temperature (the distribution coefficient (K) is 11.7). a) Approximately how many grams of benzoic acid would be recovered in the organic layer if 10.0 g of benzoic acid dissolved in 100 mL of water was extracted with 100 mL of dichloromethane? Show calculations. b) Approximately how many grams of benzoic acid would be recovered if the water layer was extracted a...
The following questions are from an experiment titled
Friedel-Crafts Alkylation for Organic Chemistry II Lab. There are
pictures attached of the lab manual.
2) Is this method a good route for the preparation of
p-sec-butyltoulene? Give reasons for your answer.
3) Why do you use a large excess of toulene. What are its
functions?
4) What is the purpose for adding the hydrochloric acid to the
water in the separatory funnel in step 5? Hint: If no acid is
added,...
Organic chemistry -Carboxylic acid homework
Question: In the general chemistry lab, students synthesize
aspirin from salicylic acid and acetic anhydride. In the lab,
students use sulfuric acid as a catalyst, but I want to consider an
alternate method for synthesizing aspirin using sodium acetate as a
catalyst:
a. Draw the structure of sodium acetate. Is sodium acetate a
stronger or weaker base than sodium hydroxide (NaOH). Explain. (1.5
pts)
b. Consider the structure of salicylic acid. It contains two
potentially...
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...
Organic chemistry post-lab question: "Why is important
to add the alkyl halide dropwise in your reaction? (Hint: your
reaction is not heated, but you still need a water-cooled
condenser!)" Please answer in detail!
Here is a copy of the experiment, thank you!
The Grignard reaction is an important synthetic process by which a carbon-carbon bond is formed. Magnesium metal is first reacted with an organic halide. The resultant organo-magnesium halide (Grignard reagent) is then combined with a carbonyl compound, ultimately...
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