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Iron burning in chlorine gas
Iron burning in chlorine gas. Iron (Fe) producing flames as it reacts with chlorine gas (Cl2) in a gas jar, producing brown fumes of iron (III) chloride (FeCl3). The reaction starts once the iron (in the form of iron wool) has been heated to glowing red and placed in the gas jar. This is an example of an exothermic reaction (one that releases heat).
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