Yield & Atom Economy (AQA GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is a reaction pathway?
What is a reaction pathway?
Series of steps to make a product
What does a higher percentage yield indicate?
What does a higher percentage yield indicate?
More product from same reactants
What does atom economy measure?
What does atom economy measure?
How much reactant becomes product vs waste
Why are faster reactions usually preferred?
Why are faster reactions usually preferred?
They produce product more quickly
How can useful by-products improve a process?
How can useful by-products improve a process?
They can be sold or used
What is the chemical formula for fermentation of glucose to ethanol?
What is the chemical formula for fermentation of glucose to ethanol?
What is the chemical formula for hydration of ethene?
What is the chemical formula for hydration of ethene?
What is the percentage yield of fermentation of sugars to ethanol?
What is the percentage yield of fermentation of sugars to ethanol?
15%
What is the atom economy of hydration of ethene?
What is the atom economy of hydration of ethene?
100%
What percentage of ethene converts to ethanol at any one time in hydration?
What percentage of ethene converts to ethanol at any one time in hydration?
5%
What overall yield can hydration achieve by recycling unreacted ethene?
What overall yield can hydration achieve by recycling unreacted ethene?
95%
What happens to fermentation's atom economy if all by-product is used?
What happens to fermentation's atom economy if all by-product is used?
Could reach 100%