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Paraffin oil has a boiling point greater than 370°C. What was the purpose of adding paraffin to the reaction flask when cracking dicyclopentadiene? (Select all that apply.)
1) Paraffin serves as the hydrogen-donor in the reduction of dicyclopentadiene to cyclopentadiene.
2) Paraffin prevents the formation of free radicals that interfere with the cracking process.
3) Paraffin as a solvent results in more homogeneous heat distribution in the reaction vessel.
4) Paraffin is inflammable, which helps control the risk of fire during the cracking process.
5) Paraffin induces the formation of free radicals that are needed for the cracking process to proceed.
6) Paraffin prevents the reaction vessel from running dry.

Respuesta :

Answer:

3) Paraffin as a solvent results in more homogeneous heat distribution in the reaction vessel.

Explanation:

First off, cyclopentadiene is obtained by “cracking” dicyclopentadiene. The cracking is carried out at 300 °C.

How do we Know if the reaction mixture have reached 300°C for cracking to occur? You probably thinking we use a thermometer..

The temperature of the reaction should be about 300 degrees and a normal thermometer would explode because it would reach past the heating limit.

So what do we then use?

We use a solvent whose boiling point is above the temperature needed for the reaction to occur and that's where paraffin comes into play. The moment the solvent begins to boil, we are certain that the temperature needed for the reaction has been reached.

The correct answer is option 3.

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