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Chemistry · Glossary

What is Inert atmosphere?

Definition 35.2 University Chemistry — Year 2 · Chapter 35 — Lab Techniques II: Synthesis and Analysis in Practice

A reaction is run under an inert atmosphere when the air in the apparatus has been replaced by an unreactive gas, nitrogen or argon, kept at a slight overpressure so that air cannot enter.

A reaction under nitrogen (schematic). Three-necked flask in an ice bath, with an internal thermometer in the liquid; the reagent is added from a pressure-equalising funnel through which the nitrogen enters; the gas leaves through the condenser and an oil bubbler.
A reaction under nitrogen (schematic). Three-necked flask in an ice bath, with an internal thermometer in the liquid; the reagent is added from a pressure-equalising funnel through which the nitrogen enters; the gas leaves through the condenser and an oil bubbler.
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