3418203
Description
Flashcards by Zahra Mukhtar, updated more than 1 year ago
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Created by Zahra Mukhtar
about 9 years ago
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| Question | Answer |
| What are Arenes? | Aromatic hydrocarbons containing one or more benzene rings. |
| Explain the term "Aromatic" | It originally referred to pleasant smells, but now it implies a particular sort of de-localised bonding |
| What is a benzene molecule? | A ring of six carbon atoms, each of which are bonded to one hydrogen atom. There are 3 double bonds. |
| Molecular formula of benzene? | C6H6 |
| How does benzene look? | |
| Do aromatic copounds have a smell? Explain: | Early scietists thought so. As science has developed we realise it has nothing to do with this. In fact aspirin has no odour but its structure contains a benzene ring. |
| What raw materials are arenes formed from? | Crude oil, coal, volcanoes, forest fires, petrol, cigarette smoke. |
| What can benzene be used to make? | Detergents,explosives, pharmaceuticals and dyestuffs. |
| What features of benzene are? | Colourless liquid, sweet odour, carcinogen (cancer-causing), flammable. |
| What can Benzene cause? | Cancer as it is carcinogenic, it can also cause leukaemia or anaemia. |
| Why did scientists decide that benzene should be structured as a ring? | They originally thought that it was straight, with many double bonds, but it was quite unreactive to consider to be highly unreactive. Didn't take part in most reactions like alkenes. |
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