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The reversible reaction 2 SO2 (g) + O2 (g) <-> 2 SO3 (g) has a delta H value of -197 kJ/mol. Use Le Chatelier's principle to explain what conditions would give the highest equilibrium yield and why industry uses different conditions. (5 marks)

Le Chatelier's principle states that if a system is disturbed - something changes - the system will tend to move in the direction that minimises the change. 3 marks from: The forw...

Answered by Conor C. • Chemistry tutor

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Potassium forms an ionic compound with sulfur. Describe what happens when two atoms of potassium react with one atom of sulfur. Give your answer in terms of electron transfer. Give the formulae of the ions formed.

Potassium (K) is in group 1 of the periodic table, therefore it has 1 electron in it's outer shell. Sulfur is in group 6 so it has 6 electrons in it's outer shell. Ionic bonds occur when electrons are tra...

Answered by Aashish A. • Chemistry tutor

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What are the factors that affect the rate of a chemical reaction?

For a reaction to occur molecules must collide with energy greater than or equal to the activation energy, in the correct orientation. The factors affecting the rate of a reaction are:
Pressure of re...

Answered by Amelia J. • Chemistry tutor

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You are given a clear solution that is either an alkene or an alkane. Describe a test using bromine water that you could use to determine whether it is an alkene or alkane solution.

1 mark : Indication that the solution and bromine water should be mixed together1 mark : Indicating that the bromine water will de-colourise / go colourless if the solution contains an alkeneOR 1 mark awa...

Answered by Noah H. • Chemistry tutor

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Part a) Draw the mechanism of the attack of CN- on CH3COCH3 in the presence of HCN Part b) Explain why the product of this reaction does not rotate the plane of plane polarised light

Part a) 1 mark : Show the nucleophilic attack of CN- at the carbonyl forming the O-1 mark : Show the protonation of the O- via the deprotonation of HCNPart b)1 mark: Student has identified that the interm...

Answered by Noah H. • Chemistry tutor

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