Mixed spectra long answer exam question practice
This is a set of more difficult long answer exam questions that require you to use data from mass spectra,
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Category: Exam question practice
How to find the equilibrium constant and equilibrium concentrations for a reaction
Now it is time to introduce the concept of the equilibrium constant, Kc. Kc is basically a ratio – the
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CFCs and the ozone layer
The chemistry that underlies the depletion of ozone in the stratosphere by chlorofluorocarbon molecules is really interesting – an application
Interpreting the mass spectrum of an organic molecule
Mass spectrometry is a really powerful tool for helping us to piece together the structure of an organic molecule. Ionisation
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Electrolysis of solutions
Electrolysis uses electricity (energy) to drive a non-spontaneous reaction which is useful for recharging batteries, splitting water to make hydrogen
Redox titration exam question practice
Redox titration questions are very popular on exam papers. They are usually set in an unfamiliar context and may require
Using bond enthalpies to calculate an enthalpy change of reaction
Reactions are either endothermic or exothermic – the heat transferred during a chemical reaction is either moving from the system
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How to calculate enthalpy of neutralisation
Determining either the enthalpy change of neutralisation, or the enthalpy change for a classic displacement reaction (they are pretty much
Atomic absorption and emission spectroscopy
How can we possibly know what elements are present in the stars? It’s not like we can nip off and
Why are ionic compounds soluble? (part 2)
For a full understanding of why ionic compounds are soluble we need to consider both the enthalpy and entropy changes