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Describe how you would differentiate a sample of butanal and butan-2-one.

You would add tollen's reagent to both samples. The butanal would form a silver mirror, whereas, butan-2-one would remain unchanged. This is due to the fact that an aldehyde can be oxidised to a carboxylic a...
Answered by • Chemistry tutor
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How is a meander formed? (4 marks)

Meanders often occur in the middle course of a river as the water begins to move at a faster pace. As the water flows around a bend it is pushed towards the outer bank of the curve and this increases the lev...
AC
Answered by Aimee C. • Geography tutor
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Que savez-vous de l'histoire du cinéma français?

Given that this is an oral question, there isn't time to prepare in the exam itself. However, these questions follow certain formats which, when learned, make it much more manageable. The first thing to obse...
Answered by • French tutor
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The Haber process is used to manufacture ammonia. Explain the optimum conditions for this reaction and why these conditions may not be used in industry

N 2 (g)+3H 2 (g) ⇋ 2NH 3 (g) ΔH=-92kJmol -1 (equation for question above) According to Le Chatelier's principle, a system in dynamic equilibrium will shift the position of equilibrium to minimise the change ...
LA
Answered by Luke A. • Chemistry tutor
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What are the innate and adaptive immune systems and how do their roles overlap?

In our bodies we have a host of cells that make up our immune system. The immune system itself can be divided into the innate and adaptive immune response. If we use an analogy, the innate immune system acts...
Answered by • Biology tutor
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