Racemic Mixtures (AQA A-Level Chemistry): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the ratio of enantiomers in a racemic mixture?
What is the ratio of enantiomers in a racemic mixture?
50:50
What optical property does a racemic mixture exhibit?
What optical property does a racemic mixture exhibit?
Optically inactive
If one enantiomer rotates light by degrees, what does the other rotate it by in a racemate?
If one enantiomer rotates light by degrees, what does the other rotate it by in a racemate?
degrees
What is the net rotation of plane-polarised light in a racemic mixture?
What is the net rotation of plane-polarised light in a racemic mixture?
degrees
Which compounds typically form racemic mixtures via nucleophilic addition?
Which compounds typically form racemic mixtures via nucleophilic addition?
Ketones and aldehydes
What is the geometry of a carbonyl group?
What is the geometry of a carbonyl group?
Planar
From which directions can a nucleophile attack a carbonyl carbon?
From which directions can a nucleophile attack a carbonyl carbon?
Top or bottom of the plane
Why does nucleophilic attack on a carbonyl produce a 50:50 mix of enantiomers?
Why does nucleophilic attack on a carbonyl produce a 50:50 mix of enantiomers?
Equal probability of attack from each side
How can optical isomers be distinguished from each other?
How can optical isomers be distinguished from each other?
Through their optical activity
What problem can racemic mixtures cause in pharmaceuticals?
What problem can racemic mixtures cause in pharmaceuticals?
Reduce drug efficacy or cause side effects