\( \mathrm{H}_{2} \mathrm{O}_{2} \) is always stored in black bottl...

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\( \mathrm{H}_{2} \mathrm{O}_{2} \) is always stored in black bottles because :
\( \mathrm{P} \)
(1) it is highly unstable.
W
(2) it's enthalpy of decomposition is high.
(3) it undergoes autoxidation on prolonged standing.
(4) none of these.
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