Choosing a reaction pathway (Edexcel GCSE Chemistry): Quizzes

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3.3.4 Choosing a Reaction Pathway
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What is a reaction pathway?

Series of steps to make a product

What does percentage yield measure?

How much reactant turns into product

Why is a higher atom economy better?

It means less waste is produced

Why are faster reactions usually preferred?

They produce the product more quickly

How can useful by-products improve a process?

They can be sold or used

What is the formula for fermentation of glucose to ethanol?

C6H12O62C2H5OH+2CO2C_6H_{12}O_6 \rightarrow 2C_2H_5OH + 2CO_2

What are the reactants in hydration of ethene?

Ethene and water

What is the percentage yield of fermentation?

15%

What is the atom economy of hydration of ethene?

100%

Which method has a higher rate of reaction?

Hydration of ethene

What % of ethene converts to ethanol at any one time in hydration?

5%

What by-product from fermentation can be sold?

Carbon dioxide

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