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Describe a test that could be used to distinguish between potassium sulfate (K2SO4) and potassium nitrate (KNO3)

Add a solution containing Barium ions (eg BaCl2, Ba(OH)2, etc)K2SO4 will form white precipitateKNO3 will have no visible change

Answered by Isobel W. • Chemistry tutor

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An aldehyde CH3CH2CH2CHO reacts with potassium cyanide (KCN) to form a racemic mixture of two stereoisomers of CH3CH2CH2CH(OH)CN. A)Explain why a racemic mixture is formed and b)describe how you would distinguish between 2 samples of the stereoisomers

A) The aldehyde contains a planar carbon group which can be attacked from both sides. Each side has equal probability of being attacked resulting in a ra...

Answered by Isobel W. • Chemistry tutor

8146 Views

How to compare and contrast the authors of one text with another when writing an essay.

This is a standard A Level essay question which is asked across multiple exam boards with an ultimate theme that the student must write about. It is also a good question to work through with students as ...

Answered by Olivia D. • English Literature tutor

3984 Views

How is the pastoral presented in Blake's 'Songs of Innocence and Experience'?

Blake's use of the pastoral can be interpreted in a variety of different ways. Used as a landscape to condemn the current industrialisation of the countryside at the time, Blake holds up a mirror to both ...

Answered by Fae H. • English Literature tutor

5648 Views

What is the difference between transcription and translation?

Transcription - involves making mRNA from DNA. It happens inside the nucleus
Translation - using the mRNA as a set of instructions to make a polypeptide. Happens at the ribosome.
More in depth ...

Answered by Lauren M. • Biology tutor

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