One of the alkali metals reacts with oxygen to form a solid white substance. when this substance is dissolved in water, the solution gives a positive test for hydrogen peroxide, h2o2. when the solution is tested in a burner flame, a lilac-purple flame is produced. what is the likely identity of the metal?

Question

Emilio

Chemistry

13 January, 23:17

One of the alkali metals reacts with oxygen to form a solid white substance. when this substance is dissolved in water, the solution gives a positive test for hydrogen peroxide, h2o2. when the solution is tested in a burner flame, a lilac-purple flame is produced. what is the likely identity of the metal?

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Zayne Compton · Answer 1

The identity of the metal is likely Potassium. The formula: K2O2 + 2H2O - - > 2KOH + H2O2 is the balance chemical equation for the reaction of the white substance with water, using the lowest coefficients.