What happen when hydrogen peroxide is treat with 1.acidified k iodide 2.lead sulphide
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When hydrogen peroxide is added to potassium iodide in neutral solution, the potassium iodide acts as a catalyst in the decomposition of hydrogen peroxide into water and oxygen.
Lead(II) sulphide and hydrogen peroxide (H2O2) react to form lead(II) sulphate and water. This reaction is used to clean oil paintings that have blackened due to the reaction of lead based paints with atmospheric hydrogen sulphide
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