A reactant is added to the refluxing reaction mixture in a controlled way via an addition funnel. This can be done to prevent exothermic reactions getting out of control.

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The Interactive lab primer has been developed as part of the Royal Society of Chemistry Teacher Fellowship Scheme titled ‘Chemistry for our Future’ in partnership with the University of Southampton, The University of Nottingham, University of Birmingham and The University of Sheffield

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This resource is part of the interactive lab primer collection.