Creating a supersaturated gas evolving oscillator

By Declan Fleming2023-06-05T09:26:00

Lots of small bubbles in a clear liquid rising to the surface

Source: © Declan Fleming

Use this fizzy practical for a kinetic and thermodynamic showdown in class

The reaction of sodium nitrite with acidified ammonia generates an oscillating fizzy reaction that demonstrates the effects of pressure, kinetics vs thermodynamics and more. Use this reaction to teach secondary chemistry students how variables can affect rates of reaction. You and your learners will be mesmerised by the waves of fizz – a definite must-try!

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