Ethanol,C2H5OH,isanalcohol. It can be produced by the fermentation of sugars. Fermentation takes place at a controlled temperature. (a) During fermentation, bubbles of a gas are formed. Which gas is formed in this reaction?
Carbon dioxide
1 of 5
Explain why the temperature of the fermentation of sugars has to be controlled.
• optimum temperature for maximum rate • temperature too high, enzyme denatures • temperature too low, rate is slow
2 of 5
An ester is a compounds formed when an alcohol reacts with a carboxylic acid. (a) Ethanoic acid is one of the simplest carboxylic acids that can be used to make esters. (i) Complete the equation for the reaction of ethanoic acid with ethanol to form
H2O
3 of 5
Ethanoic acid is a typical acid. Describe what you would see when ethanoic acid reacts with sodium carbonate.
colourless gas / carbon dioxide
4 of 5
What is a dynamic equilibrium?
both (forward and back) reactions occur at same time (and) at same rate
5 of 5
Other cards in this set
Card 2
Front
Explain why the temperature of the fermentation of sugars has to be controlled.
Back
• optimum temperature for maximum rate • temperature too high, enzyme denatures • temperature too low, rate is slow
Card 3
Front
An ester is a compounds formed when an alcohol reacts with a carboxylic acid. (a) Ethanoic acid is one of the simplest carboxylic acids that can be used to make esters. (i) Complete the equation for the reaction of ethanoic acid with ethanol to form
Back
Card 4
Front
Ethanoic acid is a typical acid. Describe what you would see when ethanoic acid reacts with sodium carbonate.
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