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Showing results 1 to 10 of 94
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PP036 - Exploring equilibria: cobalt(II) complexes
A relatively simple activity involving two vividly coloured cobalt(II) complexes in solution can be used to illustrate the effects of changing conditions (concentration, temperature) on a reaction at ..
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complexes
PP100 – Testing for positive ions: transition metals ions
The metal ions cobalt(II), copper(II), iron(II) and iron(III) can be tested for with simple test tube reactions. These tests are more specific than precipitation reactions with sodium hydroxide soluti..
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complexes
PP098 – Testing for positive ions: reactions with hydroxides and ammonia
Testing for positive ions: reactions with hydroxides and ammonia. This microscale practical is carried out on a worksheet that is laminated or placed in a plastic wallet. The method minimises the use ..
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complexes
PP099 – Testing for positive ions: non-transition metals
The positive ions aluminium (Al3+), potassium (K+), lead(II) (Pb2+) and ammonia (NH4+) can be tested for with simple test tube reactions. These tests are more specific than precipitation reactions wit..
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complexes
PX025 - Cobalt(II) compounds
Brief risk assessment guidance and experimental notes for a range of activities involving cobalt(II) compounds.
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complexes
TL002 - Cigarette burning
A cigarette burning is an example of incomplete combustion of a complex mix of chemicals, wheremany of the products are toxic. This demonstration should reinforce the message that during smoking,even ..
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complexes
PP067 - Distillation of copper(II) sulfate
With careful supervision, students can carry a simple distillation to separate a pure substance (water) from a solution (copper(II) sulfate). This can be achieved by using a side-arm boiling tube inst..
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complexes
SRA029 - Use of liquid nitrogen
A variety of simple and more complex demonstrations can be performed using liquid nitrogen.
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complexes
PP097 –Testing for common negative ions - additional ions
The additional negative ions test tube reactions for nitrate(III), nitrate(V), sulfate(IV), phosphate and carboxylates (methanoate and ethanoate).
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complexes
PP093 - Iodine clock reaction: Harcourt-Essen method
The kinetics of a reaction can be investigated by determining how the rate of the reaction varies with the concentration of the reactants. The Harcourt-Essen method is useful as the reaction kinetics ..
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complexes
Showing results 1 to 10 of 94
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