potassium react with oxygen
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The freshly cut surfaces are silvery and shiny, but quickly turn dull as the metal reacts with oxygen in the air. The group 1 metals react vigorously with oxygen to form metal oxides. Lithium burns with a red flame, sodium with a yellow-orange flame, and potassium burns with a lilac flame.
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Hello friend,
Potassium burns vigorously in oxygen, so only gentle heating is required to make it burn. It gives a lilac flame to produce an orange powder. Potassium is very soft and easily cut. The resulting surface is bright and shiny. However, this surface soon tarnishes because of reaction with oxygen and moisture from the air. If potassium is burned in air, the result is mainly formation of orange potassium superoxide, KO2.
Hope this helps!!!
Potassium burns vigorously in oxygen, so only gentle heating is required to make it burn. It gives a lilac flame to produce an orange powder. Potassium is very soft and easily cut. The resulting surface is bright and shiny. However, this surface soon tarnishes because of reaction with oxygen and moisture from the air. If potassium is burned in air, the result is mainly formation of orange potassium superoxide, KO2.
Hope this helps!!!
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