Question

In: Chemistry

Show an extraction scheme in how to purify the benzaldehyde. Draw the mechanism for each of...

Show an extraction scheme in how to purify the benzaldehyde. Draw the mechanism for each of the four products that can be formed in the first part of the reaction.

Solutions

Expert Solution

Benzaldehyde is commonly contaminated with benzoic acid. It is purified in the following way. Benzoic acid is poorly soluble in water but it is soluble in Na2CO3. So, a sample of benzaldehyde is washed with 10% sodium carbonate and then with water. It is then dried over 5–10 g. of anhydrous magnesium sulfate. A few small crystals of hydroquinone are added with the drying agent. Hydroquinone reacts with O2 more quickly than of benzaldehyde, thus protecting benzaldehyde from oxidation. The dry benzaldehyde is decanted through a cotton plug into a flask and is distilled under reduced pressure.

An extraction scheme to purify the benzaldehyde

queen_honey_blossom answered 1 year ago
Next > < Previous

Related Solutions

Imine formation with the reaction of aniline with benzaldehyde. Draw mechanism.
Imine formation with the reaction of aniline with benzaldehyde. Draw mechanism.
name the 2 possible mechanisms for nucleophilic substitution. show (scheme) 1 example for each mechanism.
name the 2 possible mechanisms for nucleophilic substitution. show (scheme) 1 example for each mechanism.
Make a flow chart of the purification scheme for the following scenario. 7. Benzaldehyde is used...
Make a flow chart of the purification scheme for the following scenario. 7. Benzaldehyde is used as the starting material for the synthesis of cinnamic acid. An organic chemistrystudent had made the mistake of stopping the reaction before it was complete and ended up with a mixture ofbenzaldehyde and cinnamic acid. Purify the cinnamic acid. Provide data to show your compound is pure.
What is the reaction scheme and mechanism for the halogen exchange reaction, via an Sn2 mechanism,...
What is the reaction scheme and mechanism for the halogen exchange reaction, via an Sn2 mechanism, using benzyl bromide as the electrophilic substrate? In this reaction, the alkyl halide will react with sodium iodine in acetone.
Can you show how to draw the normal curve for each of the problems and label...
Can you show how to draw the normal curve for each of the problems and label it as well? Heights of MEN in the U.S. are normally distributed µ = 69.6 inches with σ = 3 inches. -________ percent (to nearest %) of men in the U.S. are either shorter than 5 ft. or taller than 6 ft? -In a group of 150 U.S. men, approximately ________ of them should be shorter than 65 inches. -A male height of _______________...
Can you show how to draw the normal curve for each of the problems and label...
Can you show how to draw the normal curve for each of the problems and label it as well? Heights of MEN in the U.S. are normally distributed µ = 69.6 inches with σ = 3 inches. -________ percent (to nearest %) of men in the U.S. are either shorter than 5 ft. or taller than 6 ft? -In a group of 150 U.S. men, approximately ________ of them should be shorter than 65 inches. -A male height of _______________...
When trying to purify fluorene, why does a NaOH extraction work best with Benzoic Acid, succinimide,...
When trying to purify fluorene, why does a NaOH extraction work best with Benzoic Acid, succinimide, and fluorenone but a HCl extraction works best with ethyl-4-aminobenzoate? Also, draw the acid/base reaction for each of the reactions.
1) Draw the structure of the product formed by addition of vitamin B1 and benzaldehyde. 2)...
1) Draw the structure of the product formed by addition of vitamin B1 and benzaldehyde. 2) Ammonia adds to carbonyl groups but is ineffective as a catalyst for the benzoin condensation. Explain. 3) Write a balanced oxidation-reduction equation for the oxidation of benzoin by ammonium nitrate (the cupric ion catalysis need not to be considered). 4) In the benzil oxidation the initial blue color changes to gren as the reaction proceeds. Why? 5) In dilantin sodium it is the imide...
1) Draw the structure of the product formed by addition of vitamin B1 and benzaldehyde. 2)...
1) Draw the structure of the product formed by addition of vitamin B1 and benzaldehyde. 2) Ammonia adds to carbonyl groups but is ineffective as a catalyst for the benzoin condensation. Explain. 3) Write a balanced oxidation-reduction equation for the oxidation of benzoin by ammonium nitrate (the cupric ion catalysis need not to be considered). 4) In the benzil oxidation the initial blue color changes to gren as the reaction proceeds. Why? 5) In dilantin sodium it is the imide...
Draw a detailed mechanism of dibenzalactone
Draw a detailed mechanism of dibenzalactone
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT