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Chemistry
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What is Fractional Distillation and how does it work?

Fractional Distillation is a method used in industry to separate different sized hydrocarbons (long chains that consist of hydrogen and carbon). This is useful as it mean...

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Answered by Fred P. Chemistry tutor
3011 Views

Why, in the bromination of phenols, do you not need an acid catalyst like you do in the bromination of benzene?

Benzene's delocalised π electrons means that it is not very nucleophilic and so cannot polarise a neutral molecule and produce the required electrophile. As a result it require a catalyst to form the elec...

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Answered by Sian A. Chemistry tutor
6254 Views

Explain how a covalent bond holds two atoms together.

The electrostatic forces of attraction between the shared pair of bonded electrons and the positively charged nuclei hold the atoms together.

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Answered by Adam R. Chemistry tutor
9990 Views

Write an ionic equation, with state symbols, to show the reaction of calcium with an excess of water.

Ca(s)+ 2H2O(l) ---> Ca2+(aq) + 2OH– (aq) + H2(g) 

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Answered by Owais M. Chemistry tutor
13290 Views

Which chemical would have a higher boiling point 1,3-dimethylbutane or hexane

Hexane would have the higher boiling point, due to the fact it's unbranched unlike 1,3-dimethlybutane, hexane would have more surface contact and hence more London forces acting upon it. As a result it wo...

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Answered by Talvin R. Chemistry tutor
2715 Views

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