Top answers


How does temperature affect the rate of reaction?

For a reaction to occur particles reacting must have a neccessary activation energy (kinetic energy). As temperature gets higher, so does the kinetic energy of particles, which can be ilustrated with a Maxwe...
Answered by Chemistry tutor
2646 Views

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
16225 Views

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
21366 Views

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
2802 Views

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
6345 Views