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  isolated product was measured.<o:p></o:p></span></div>
  

Source: https://thesuperbloggers.blogspot.com/feeds/posts/default

1. <?xml version='1.0' encoding='UTF-8'?><?xml-stylesheet href="http://www.blogger.com/styles/atom.css" type="text/css"?><feed xmlns='http://www.w3.org/2005/Atom' xmlns:openSearch='http://a9.com/-/spec/opensearchrss/1.0/' xmlns:blogger='http://schemas.google.com/blogger/2008' xmlns:georss='http://www.georss.org/georss' xmlns:gd="http://schemas.google.com/g/2005" xmlns:thr='http://purl.org/syndication/thread/1.0'><id>tag:blogger.com,1999:blog-2904018046779117670</id><updated>2024-10-25T02:43:02.756-07:00</updated><title type='text'>The Super Bloggers</title><subtitle type='html'></subtitle><link rel='http://schemas.google.com/g/2005#feed' type='application/atom+xml' href='https://thesuperbloggers.blogspot.com/feeds/posts/default'/><link rel='self' type='application/atom+xml' href='https://www.blogger.com/feeds/2904018046779117670/posts/default'/><link rel='alternate' type='text/html' href='https://thesuperbloggers.blogspot.com/'/><link rel='hub' href='http://pubsubhubbub.appspot.com/'/><author><name>jpa9000</name><uri>http://www.blogger.com/profile/15196935947226842768</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='16' height='16' src='https://img1.blogblog.com/img/b16-rounded.gif'/></author><generator version='7.00' uri='http://www.blogger.com'>Blogger</generator><openSearch:totalResults>1</openSearch:totalResults><openSearch:startIndex>1</openSearch:startIndex><openSearch:itemsPerPage>25</openSearch:itemsPerPage><entry><id>tag:blogger.com,1999:blog-2904018046779117670.post-7686949648127379359</id><published>2014-02-24T18:36:00.000-08:00</published><updated>2016-03-02T18:37:51.773-08:00</updated><title type='text'>DIELS ALDER REACTION</title><content type='html'>&lt;div class=&quot;MsoNoSpacing&quot;&gt;
2. <br /></div>
3. <div class="MsoNoSpacing">
4. <span style="font-family: 'Times New Roman', serif; font-size: 12pt; line-height: 200%; text-indent: 0.5in;">The
5. objective of this lab is to perform Diels Alder reaction using anthracene and
6. maleic anhydride and then to run the melting point of the product.</span></div>
7. <div class="MsoNormal" style="line-height: 200%; text-indent: .5in;">
8. <span style="font-family: 'Times New Roman', serif; font-size: 12pt; line-height: 200%;">In a dried round bottom flask equipped with a stir bar </span><span style="font-family: 'Times New Roman', serif; font-size: 12pt; line-height: 200%;">0.400 g of anthracene</span><span style="font-family: 'Times New Roman', serif; font-size: 12pt; line-height: 200%;">, </span><span style="font-family: 'Times New Roman', serif; font-size: 12pt; line-height: 200%;">0.200 g of maleic anhydride </span><span style="font-family: 'Times New Roman', serif; font-size: 12pt; line-height: 200%;">and </span><span style="font-family: 'Times New Roman', serif; font-size: 12pt; line-height: 200%;">5 mL of toluene were added. </span><span style="font-family: 'Times New Roman', serif; font-size: 12pt; line-height: 200%;">A condenser was attached to the reaction flask, and then heating
9. was begun.</span><span style="font-family: 'Times New Roman', serif; font-size: 12pt; line-height: 200%;"> </span><span style="font-family: 'Times New Roman', serif; font-size: 12pt; line-height: 200%;">The heat was set on the heating apparatus to ~250</span><span style="font-family: Symbol; font-size: 12.0pt; line-height: 200%; mso-ascii-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-char-type: symbol; mso-hansi-font-family: "Times New Roman"; mso-symbol-font-family: Symbol;">°</span><span style="font-family: 'Times New Roman', serif; font-size: 12pt; line-height: 200%;">C to heat the mixture quickly. 
10. The boiling point of toluene is 110</span><span style="font-family: Symbol; font-size: 12.0pt; line-height: 200%; mso-ascii-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-char-type: symbol; mso-hansi-font-family: "Times New Roman"; mso-symbol-font-family: Symbol;">°</span><span style="font-family: 'Times New Roman', serif; font-size: 12pt; line-height: 200%;">C so
11. excessive heating was not necessary.</span><span style="font-family: "Times New Roman","serif"; font-size: 12.0pt; line-height: 200%;"> After the reaction mixture began to reflux, the heat was
12. reduced to 150-175</span><span style="font-family: Symbol; font-size: 12.0pt; line-height: 200%; mso-ascii-font-family: "Times New Roman"; mso-bidi-font-family: "Times New Roman"; mso-char-type: symbol; mso-hansi-font-family: "Times New Roman"; mso-symbol-font-family: Symbol;">°</span><span style="font-family: 'Times New Roman', serif; font-size: 12pt; line-height: 200%;">C to maintain reflux. After
13. the mixture had begun to reflux, heating continued for an additional hour.  After one hour of reflux, the reaction was
14. removed from the heat, and the reaction mixture was allowed to </span><span style="font-family: 'Times New Roman', serif; font-size: 12pt; line-height: 200%;">cool to room temperature. </span><span style="font-family: "Times New Roman","serif"; font-size: 12.0pt; line-height: 200%;">The
15. mass of a small filter paper was measured and the product of the reaction was
16. collected by vacuum filtration using the small Büchner funnel.</span><span style="font-family: "Times New Roman","serif"; font-size: 12.0pt; line-height: 200%; mso-fareast-font-family: Calibri;"> </span><span style="font-family: "Times New Roman","serif"; font-size: 12.0pt; line-height: 200%;">The product was allowed
17. to dry under vacuum in the Büchner funnel for 15 minutes. The mass of the
18. filter paper containing the product was measured, and the mass and percent
19. yields of the isolated product were calculated. The melting point of the
20. isolated product was measured.<o:p></o:p></span></div>
21. <div class="MsoNormal" style="line-height: 200%; text-indent: .5in;">
22. <span style="font-family: "Times New Roman","serif"; font-size: 12.0pt; line-height: 200%;">The
23. mass of the filter paper was 0.180g. The mass of the filter paper with product
24. was 0.536g. The difference gave 0.356g as mass of product. The percentage yield
25. was 63.12% following the formula as used on this following website confirmed
26. the correctness of the answer. The melting was in the range of 262.5-263.7 <sup>o
27. </sup>C, which seems to be supported by a similar range of 262-264 on the
28. following website <o:p></o:p></span></div>
29. <div class="MsoNormal" style="line-height: 200%; text-indent: .5in;">
30. <span style="font-family: "Times New Roman","serif"; font-size: 12.0pt; line-height: 200%; mso-bidi-font-family: "Times New Roman"; mso-bidi-theme-font: minor-bidi;">To
31. conclude, the </span><span style="font-family: "Times New Roman","serif"; font-size: 12.0pt; line-height: 200%;">use anthracene and maleic anhydride to perform Diels
32. Alder reaction was a success.</span><span style="font-family: "Times New Roman","serif"; font-size: 12.0pt; line-height: 200%; mso-bidi-font-family: "Times New Roman"; mso-bidi-theme-font: minor-bidi;"> Based on the melting points of Diels Alder of
33. 262.5-263.7<sup>o</sup>C indicated that the purity of the recovered of the
34. substance was good.<o:p></o:p></span></div>
35. <div class="MsoNormal" style="line-height: 200%;">
36. <br /></div>
37. <br />
38. <div class="MsoNormal" style="line-height: 200%;">
39. <br /></div>
40. </content><link rel='replies' type='application/atom+xml' href='https://thesuperbloggers.blogspot.com/feeds/7686949648127379359/comments/default' title='Post Comments'/><link rel='replies' type='text/html' href='https://thesuperbloggers.blogspot.com/2014/02/diels-alder-reaction.html#comment-form' title='0 Comments'/><link rel='edit' type='application/atom+xml' href='https://www.blogger.com/feeds/2904018046779117670/posts/default/7686949648127379359'/><link rel='self' type='application/atom+xml' href='https://www.blogger.com/feeds/2904018046779117670/posts/default/7686949648127379359'/><link rel='alternate' type='text/html' href='https://thesuperbloggers.blogspot.com/2014/02/diels-alder-reaction.html' title='DIELS ALDER REACTION'/><author><name>jpa9000</name><uri>http://www.blogger.com/profile/15196935947226842768</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='16' height='16' src='https://img1.blogblog.com/img/b16-rounded.gif'/></author><thr:total>0</thr:total></entry></feed>

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