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Benzene

Benzene. Index. Information Inventors Molecule Bond Quiz. Background. Michael Faraday. Alexander Mitscherlich. August Kekulé. Michael Faraday. Back to index. Back to Background. He is an Englishman He lived from 1791-1867 His discovery was in 1825, how ?:

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Benzene

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  1. Benzene

  2. Index • Information • Inventors • Molecule Bond • Quiz

  3. Background Michael Faraday Alexander Mitscherlich August Kekulé

  4. Michael Faraday Back to index Back to Background • He is an Englishman • He livedfrom1791-1867 • His discovery was in 1825, how?: • He compressed a coal gas andisolated a colourless, pleasantsmelling liquid akaan aromatic compound • Aftermany analyses he found out the the amount of carbon atomsequals the amount of hydrogynatoms

  5. Alexander Mitscherlich Back to index Back to background • He was a German • He livedfrom1794-1863 • His discovery was in 1834 • He found out that the formulaforBenzene is C6H6 • Fromthat he couldconcludethatit was anunsaturated compound with multiple double bonds (ifitonly had single bonds, the formulawould have been C6H12)

  6. August Kekulé Back to index Back to background • He is German • He livedfrom 1829-1896 • His discovery was in 1865 • He discoveredthat the structure is cyclic • Cyclic is different fromcircular, cyclic figures have corners, but the endings are connectedwitheachother • Idea had flawsanddidnotexplaineverything, but why?

  7. Molecule bonds Back to index Back to background Back to August Kekulé • Normalalkenereactions • Substitutionreaction • In a normalsituation, double bonds are shorterthan single bonds • Benzene has a special thingcalled “delocalized double bonds” • It causes the bond lengthstobe the samelength, justbetween the normal single- & double bond lenghts

  8. Back to index Quiz Back to background 1. Who was the first onetodiscoverBenzene? • Faraday • Mitscherlich • Kekulé • Liebig

  9. 2. What is Benzene’schemicalformula? • C6H6 • C6H8 • C8H6 • C8H8

  10. 3. What does Benzene’sstructure look like? • Circle • Cycle • Row • Rectangular

  11. 4. What is the formulaforanaromatic compound? • 4n+2 • 4n-2 • 2n+4 • 2n-4

  12. 5. How manybondscan a carbon atom form? • 2 • 3 • 4 • 5

  13. Right answer! Question 1 Question 2 Question 3 Question 4 Question 5

  14. Wrong answer! Question 1 Question 2 Question 3 Question 4 Question 5

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