Calculations for AS and A level Chemistry
Being confident in tackling different types of mole calculation is the foundation upon which much of A level chemistry stands
From the blog
Understanding indices and powers
Numbers expressed as an index or power of a base number are common in chemistry and you need to be
What is a clock reaction?
A clock reaction can be used to measure the rate of reaction in certain circumstances. In a typical reaction the
Using colorimetry to follow the rate of a reaction
We can use a colorimeter to follow the rate of a reaction if one of the reactants or products is
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Determining orders of reaction and a rate equation from experimental data
In order to write a rate equation (rate law) for a reaction we need to know the orders of reaction
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Understanding the rate law and orders of reaction
The reaction between hydroxide ions and bromoethane involves a collision between a molecule of each of the reactants, which means
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What does the rate of a reaction depend on?
Just because a reaction is feasible, it doesn’t mean that it will happen at a rate by which we are
Explaining C=O absorption bands in IR spectroscopy
Your may have noticed on the data sheet that the wavenumber for the absorption of C=O bonds very much depends
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Interpreting an infrared spectrum
An IR spectrum plots of the percentage of radiation that passes through a sample (transmittance) vs. the wavenumber of the
What is infrared spectroscopy?
Infrared spectroscopy is a really useful analytical technique for determining whether there are key bonds in a molecule (C=O, O-H,
Everything you need to know about C-13 NMR spectroscopy
13C NMR signals are considerably weaker than 1H NMR signals because the natural abundance of 13C is 1.1%. We also
Continue readingEverything you need to know about C-13 NMR spectroscopy