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Benzene: Molecule of Discovery - Faraday, Mitscherlich, Kekulé

Explore the history of benzene's discovery by Faraday, Mitscherlich, Kekulé, its structure, bond properties, and take a quiz to test your knowledge. Discover the secrets of this aromatic compound!

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Benzene: Molecule of Discovery - Faraday, Mitscherlich, Kekulé

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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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