Pure is dangerously unstable and undergoes auto-oxidation (disproportionation) into water and oxygen. Which of the following conditions or additives acts as a **negative catalyst** (stabilizer) to saf

Question

Pure $H_2O_2$ is dangerously unstable and undergoes auto-oxidation (disproportionation) into water and oxygen. Which of the following conditions or additives acts as a **negative catalyst** (stabilizer) to safely retard this explosive decomposition during storage?

Prashant Kotian · Accepted Answer

Correct answer: C. decomposes rapidly upon exposure to light, rough surfaces, dust, trace heavy metals, and importantly, alkali oxides found in ordinary glass. Therefore, it is stored in dark, wax-lined or Teflon bottles. Stabilizers like urea, acetanilide, or phosphoric acid are added to retard decomposition.

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