in this section

​Intro image

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​Intro image

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​A carbonyl compound - can you name it?

​What is 2,4 DNPH short for?

orange precipitate confirms carbonyl group

​The melting point of the 2,4 DNP derivative produced this way is used to help identify the carbonyl compound.

Bradys reagent derivatives' melting points

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Test for further oxidation 

​Test for aldehyde

Bond lengths and bond energy 

Here you can examine the  effect that multiple bonds have upon the length of the bond.

  • Use the top  of the three buttons ( C-C ) to select the data for a carbon - carbon single bond.
  • The two buttons at the top allow you to view the energy values and the bond length value for the selected bond.  Click each in turn to collect the data for the bond.
  • Repeat the process for the double and triple bond

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​This problem looks at Kp and the values of partial pressures for Sulphur dioxide and oxygen 

​Click to see the presentation

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Batteries or cells? Rechargable o

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​Redox chemistry and equilibria


Chromatography gets its name from the (sometimes) colourful chromatograms it produces.

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OCR syllabus

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​Sometimes in organic synthesis there is a need to extend the length of a carbon chain . This can be achieved in a few different ways: 

The NMR facility at Princeton University

This animation shows how hydrogen nuclei can be thought of as tiny bar magnets 

​Proton NMR produces a spectrum with a  number of peaks.  The number of peaks corresponds to the number of different chemical environments in which protons exist.

Use the data provided to work out what this molecule is. It contains carbon, hydrogen and oxygen only.

 High resolution NMR - reveals a splitting pattern

Carbon 13 NMR gives information about the number of and type of chemical environments in which carbon atoms can be found

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 Electronegativity values allow us to predict the direction and strength of dipoles which might exist in molecules

Electronegativity values