Answer:
\[{{H}_{2}}{{O}_{2}}\]is prepared by
treatment of metal peroxide with acid. For example:
\[Ba{{O}_{2}}+{{H}_{2}}S{{O}_{4}}\to
BaS{{O}_{4}}+{{H}_{2}}{{O}_{2}}\]
\[{{H}_{2}}{{O}_{2}}\]is very
effective oxidising agent for example :
\[PbS+4{{H}_{2}}{{O}_{2}}\to
PbS{{O}_{2}}+4{{H}_{2}}O\]
Hydrogen peroxide acts as
reducing agent also.
Hydrogen peroxide forms salt with bases,
which confirms its acidic character.
\[{{H}_{2}}{{O}_{2}}+2NaOH\to
N{{a}_{2}}{{O}_{2}}+2{{H}_{2}}O\]
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