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CHEMISTRY GUIDE-A guide to special conditions needed for various reactions

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elemis:

--- Quote from: Got Tech? GO TECH on June 04, 2010, 07:51:47 am ---In fact, you need 2 ATM for sulphur dioxide--> sulphur trioxide...just saw it in w09 q6. they state that you need 450 C and 2 Atmospheres pressure.

--- End quote ---

1-2 atm is fine.

J.Darren:
Fermentation :

Glucose -> Ethanol + Carbon dioxide

Catalyst - Enzymes from yeast.
35 centigrade - if too low the rate would be too slow, if too high the enzymes will be denatured.
When concentration of ethanol reaches about 14%, fermentation ceases becuase all the glucose has been used up / yeast dies at this concentration - ethanol is poisonous to yeast.
Carried out in absence of air as fermentation is an anaerobic respiration of yeast cells.

Acid hydrolysis of complex hydrocarbons :

Heated with dilute hydrochloric acid.
The acid is the catalyst.

Starch + water -> Glucose

Hydrolysis of proteins :

Protein + water -> Amino acids

Boiled with hydrochloric acid.

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