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Chem Note (英皇教育 A[1].Fung) HKCEE å¸&cedil

Chem Note (英皇教育 A[1].Fung) HKCEE 常

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L ² * Chemical preparation method 1. To prepare better fuels, which burnt with less air pollutants ------ Cracking ( . ) Cracking breaks down large hydrocarbon molecules into many small hydrocarbon molecules in the presence of heat and catalyst but no air. (e p 0 ) Example. 2. To prepare ethanol by fermentation ( s : ) Procedure. Put some cooked rice and yeast solution in a conical flask. Then stopper it . After a few days , ethanol is obtained. C 6 H 12 O 6 (aq) 2 CO 2 + 2 CH 3 CH 2 OH glucose . A. Fung Tel: 23050505 www.fungsir.net Preparation p.1 Catalyst. porous pot / stone gaseous alkane and alkene or aluminum oxide liquid hydrocarbon glass wool with heavy oil Heat - water . C H C H H C H H C H H C H H C H C H H C H H H C H H C H H H H H C H C H H C H H C H H C H H C H C H H C H H H H H H C C H H H H
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cooked rice and yeast solution 3. To prepare polystyrene from styrene ( ) Procedure. Pour some liquid styrene and kerosene (catalyst) into the experimental set-up of heating under reflux (. ).
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