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Chemistry
A Level

What 3 pieces of evidence disproved kekule's model? (6 marks)

Benzene is a planar molecule (all the atoms lie in one plane), and that would also be true of the Kekulé structure. The problem is that C-C single and double bonds are different lengths (C-C: 0.154 nm C=C...

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Answered by Pedro L. Chemistry tutor
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describe the structure of graphite

giant covalent structureintralayer forceseach C atom joins to 3 other Cs by covalent bondsinterlayer forcesatoms form layers with a hexagonal arrangement between atomsweak interlayer forces

Answered by Wesley Q. Chemistry tutor
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Write a balanced equation for the oxidation of Iron from the 2+ oxidation state to the 3+ oxidation state using the manganate ion.

Firstly, we need to write a balanced equation for the oxidation of Fe2+ to Fe3+ . We know that when something is oxidised, it is losing electrons, making the half equation: Fe2+...

Answered by Paige M. Chemistry tutor
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3-methyl pent 2 ene reacts with HBr to form two products. Which of these products is the minor and major product and why?

3-bromo 3 methyl pentane will be the major product while 1 bromo 3 methyl pentane will be the minor. This is due to a more stable carbocation being formed. A secondary carbocation is more stable than a pr...

Answered by Alex N. Chemistry tutor
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Why can graphite be used as a lubricant?

Between the carbon layers in graphite there are van der waal forces which are very weak. Therefore, the layers of carbon atoms are able to slide over each other allowing graphite to be used as a lubricant...

Answered by Rana D. Chemistry tutor
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