Synthesis of Diphenylacetylene

Synthesis of Diphenylacetylene Observation of Results:

 1,2-dibromo-1,2-diphenylmethane 0. 204g Diphenylacetylene 0. 087g Theoretical yield 0. 107g Percent yield 81. 3% Melting point range of diphenylacetylene 57- 60°C Average melting point 58. 5°C Average literature melting point 60. 0°C Percent error of melting point 2. 5%

Calculations: Theoretical yield: Limiting reagent (LR) x M. W. (LR) x Mole to Mole ratio x M. W. (product) = Theoretical yield of the product. 0. 204g 1, 2-dibromo-1, 2-diphenylmethane x (1mol 1, 2-dibromo-1, 2-diphenylethane/340. 5g 1,2-dibromo-1,2-diphenylmethane) x (1mol Diphenylacetylene/1mol 1,2-dibromo-1,2-diphenylmethane) x (178. 24g Diphenylacetylene/1mol Diphenylacetylene) = 0. 107g Diphenylacetylene.

Percent yield: Actual yield/ Theoretical yield x 100% = Percent yield (0. 087g Diphenylacetylene/0. 107g Diphenylacetylene) x 100% = 81. 31% Average melting point: (start of melting degree + completion of melting degree)/2 = Average melting point Average melting point (59+ 61)/2 = 60°C Average literature melting point Percent error: Absolute value (Abs) (actual yield – theoretical yield)/ theoretical x 100% = percent error Abs. 58. 5 – 60)/ 60 x 100 = 2. 5% Scheme of the Reaction (Exp. 12a/12b).

Analysis of Results: In this experiment, the compound diphenylacetylene was made by using potassium hydroxide to take the bromine off of the 1, 2-dibromo-1. 2-diphenylethane. Pyridinium bromide perbromide was used rather than Br2 due to it being a volatile and highly corrosive substance. Calculate the theoretical yield which was 0. 107g of diphenylacetylene. Calculate the percent yield of the reaction which was 81. 31%. Calculate the average melting point, so that the percent error of the melting point can be produced.

The experimental melting point range of diphenylacetylene is 57 – 60°C, and the literature value range of diphenylacetylene is 59 – 61°C. The averages of each of the melting points respectively are 58. 5°C and 60°C, so the percent error is 2. 5%. Some error that could have occurred was that some of the product was left in the round bottom and could not be taken out to be dried. The error in the melting point could have occurred from either 1,2-dibromo-1,2-diphenylmethane or potassium hydroxide being present in the final crystalline product when the melting point was being tested.

Propose Mechanism of Reaction: ________.

Calculate the price
Pages (550 words)
\$0.00
*Price with a welcome 15% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with MyStudyWriters
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
Testimonials
See why 20k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
excellent job thank you Your Score 166.25/ 175- A 1. Current Culture 15% of total grade 18.37 Criterion "1. Current Culture" has textual feedback Criterion Feedback I see interesting points, though, in general they are not about the culture.
Customer 452773, June 4th, 2023
awesome work as always
Customer 452773, August 19th, 2023
Human Resources Management (HRM)
excellent job
Customer 452773, June 25th, 2023
always perfect work and always completed early
Customer 452773, February 21st, 2023
excellent job
Customer 452773, July 28th, 2023
Excellent job
Customer 452773, March 9th, 2023
Excellent job
Customer 452773, March 17th, 2023
DATA565
The support team was late responding , my paper was late because the support team didn't respond in a timely manner. The writer of the paper finally got it right but seems there was a problem getting the revisioin to me.
Customer 452773, April 7th, 2024
excellent job
Customer 452773, August 12th, 2023
Thank you
Customer 452773, March 19th, 2023
Nursing
I just need some minor alterations. Thanks.
Customer 452547, February 10th, 2021
History
Looks great and appreciate the help.
Customer 452675, April 26th, 2021
11,595
Customer reviews in total
96%
Current satisfaction rate
3 pages
Average paper length
37%
Customers referred by a friend
Use a coupon FIRST15 and enjoy expert help with any task at the most affordable price.
Claim my 15% OFF Order in Chat