Question

Why is it so important to keep the reaction of nitration of methyl benzoate in an...

Why is it so important to keep the reaction of nitration of methyl benzoate in an ice bath when adding sulfuric acid and nitric acid and to use a pipette to add these acids slowly?

Homework Answers

Answer #1

Nitration reaction is an exothermic reaction. To control the temperature of the reaction, we are doing the reaction in an ice bath. Adding Sulfuric acid to nitric acid to make the nitrating agent is also an exothermic reaction. So, we have to use the ice bath to control the temperature.

One more important thing is there to use the ice bath. At low temperature, the nitration reaction is slow and this avoids the dinitration product. Use of pipette is important because less amount of reaction proceeds at a time and less amount of heat generated which is controlled by the ice bath.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Provide 3 observations for Nitration of methyl benzoate lab experiment. We used methyl benzoate, sulfuric acid...
Provide 3 observations for Nitration of methyl benzoate lab experiment. We used methyl benzoate, sulfuric acid and the mixture of ice-cold concentrated sulfuric and nitric acids to obtain the product.
Nitration of Methyl Benzoate Calculations - what is the theoretical yield and percent yield? - eqt:...
Nitration of Methyl Benzoate Calculations - what is the theoretical yield and percent yield? - eqt: methyl benzoate + HNO3 ----->(H2SO4 above arrow) Methyl-m-nitrobenzoate + H2O - weight recovered = 1.834 g -2.3 ml of methanol used -1.10 ml of methyl benzoate added to 2.4 ml of sulfuric acid -to the above mixture 0.8 ml of concentrated sulfuric acid and 0.8 ml of concetrated nitric acid was added drop wise
Nitration of Methyl Benzoate- 1. I obtained a meta isomer. Why did this isomer form in...
Nitration of Methyl Benzoate- 1. I obtained a meta isomer. Why did this isomer form in preference to the other isomers? Draw arrow-pushing mechanisms as a part of your explanation. The reagents used were HNO3 , H2SO4 , ice bath , ice cold methanol (for recrystallization).
Find limiting reagent for the nitration of methyl benzoate? Sulfuric Acid=3ml MolarMass=98.079 Nitric Acid-0.8ml Molar Mass=63.01...
Find limiting reagent for the nitration of methyl benzoate? Sulfuric Acid=3ml MolarMass=98.079 Nitric Acid-0.8ml Molar Mass=63.01 Methyl Benzoat=0.47g or 0.425 ml Molar Mass=136.15 and Molar mass of m-nitrobenzoate=181.14 How do I calculate the limiting reagent?
An Electrophilic Aromatic Substitution Reaction lab Hi I was just hoping that someone would be able...
An Electrophilic Aromatic Substitution Reaction lab Hi I was just hoping that someone would be able to help me find the limiting reagent and theoretical yield. It is for the nitration of methyl benzoate. We are using 0.90 ml of methyl benzoate and adding 3.0 ml of H2SO4 and 1.0 ml of nitric acid. We will be adding 1.0 ml of sulfuric acid to the 0.9 ml of methyl benzoate. Then we will mix 2.0 ml of sulfuric acid to...
Explanation of product isolation and purification of methyl m-nitrobenzoate (here is a summary of what the...
Explanation of product isolation and purification of methyl m-nitrobenzoate (here is a summary of what the experiment entails: In this experiment, methyl m-nitrobenzoate will be prepared by the reaction of nitric acid and methyl benzoate in the presence of sulfuric acid catalyst. Synthesis of methyl m-nitrobenzoate will occur by placing methylbenzoate and concentrated sulfuric acid in a vial. An air condenser will be used to hold the vial in an ice bath. Concentrated sulfuric acid and concentrated nitric acid will...
The directions tell you to add 102 mg of methyl benzoate (mw =136 g/mol) to a...
The directions tell you to add 102 mg of methyl benzoate (mw =136 g/mol) to a vial. seperately, .50 mL of conc. sulfuric acid and 0.80 mL of conc. nitric acid are put in a vial to form the nitrating mixture. which is the limiting reagent? show your work.
Why is dinitration not a serious problem in this procedure? Nitration of Bromobenzene. (EAS) Procedure: mix...
Why is dinitration not a serious problem in this procedure? Nitration of Bromobenzene. (EAS) Procedure: mix 1ml concentrated sulfuric acid and 1mil concentrated nitric acid in a long-necked round bottom flask. Add a small stir bar, then place the flask in a 50mL beaker half-filled with water sitting on a magnetic stirrer. Using a connector, secure the flask to a ring stand and begin stirring the contents. Add .5ml bromobenzene dropwise while stirring the mixture. It is important to keep...
In the nitration of bromobenzene, a mixture of nitric acid and sulfuric acid are added to...
In the nitration of bromobenzene, a mixture of nitric acid and sulfuric acid are added to the bromobenzene and stirred at room temperature. Why is it important to keep the reaction mixture at room temperature rather than heating it? -To prevent bromobenzene from evaporating out of solution. -To prevent bromobenzene from precipitating out of solution. -To prevent di-substituted products from forming. -To prevent meta-substituted products from forming. -To prevent meta-substituted and di-substituted products from forming.
1. Why is it important to keep enzymes at a constant temperature? 2. Why is it...
1. Why is it important to keep enzymes at a constant temperature? 2. Why is it important to incubate your samples at 70°C at the beginning of the RT procedure (steps 3, 4)? Why should you immediately transfer them to ice and keep them on ice while setting up the remainder of the reaction? 3. What is cDNA? """3. Incubate at 70°C for 5 min *This step denatures secondary structures that might be present in your RNA. Because RNA is...