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How do I write the full equation of a cell from two half cells? (basic, with matching electron counts and no water/acid)

Lets use an example:Fe 3+ (aq) + e - <==> Fe 2+ (aq) E 0 = +0.771 VLi + (aq) + e - <==> Li(s) E 0 = -3.040 V Step 1: Work out which half equation has the most positive standard electrode potentia...
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Answered by Fred P. • Chemistry tutor
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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 means crude oil can be separated into mo...
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Answered by Fred P. • Chemistry tutor
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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 electro...
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Answered by Sian A. • Chemistry tutor
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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
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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
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