The proper conditions of storing \( H_2O_2 \) are:
(1) Placing in wax-lined plastic bottle and kept in a dark
(2) Placing in a wax-lined plastic bottle and exposed to light
(3) Placing in a wax-lined plastic bottle containing traces of base
(4) Placing in metal vessel and exposed to light
Placing in metal vessel and exposed to light
Step 1: Understanding the storage conditions for \( H_2O_2 \)
Hydrogen peroxide (\( H_2O_2 \)) is a highly reactive and unstable compound. It decomposes easily when exposed to light, heat, or contaminants. The decomposition reaction is as follows: \[ 2 H_2O_2 \rightarrow 2 H_2O + O_2 \] This reaction is catalyzed by light, heat, and impurities such as dust or metal ions.
Step 2: Evaluating the given options
- Option (1): Storing \( H_2O_2 \) in a wax-lined plastic bottle and keeping it in the dark is the correct approach, as it prevents light exposure and avoids contamination from metal ions.
- Option (2): Exposing \( H_2O_2 \) to light accelerates its decomposition, making this an incorrect choice.
- Option (3): Adding a base catalyzes the decomposition of \( H_2O_2 \), making it an incorrect storage condition.
- Option (4): Storing in a metal vessel leads to contamination with metal ions, which further accelerates decomposition.
Thus, the correct answer is Option (1)
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