question_answer

Presence of water is avoided in the preparation of \[{{H}_{2}}{{O}_{2}}\] from \[N{{a}_{2}}{{O}_{2}}\]. Assign reason.

Answer:

                \[N{{a}_{2}}{{O}_{2}}\] reacts with water to form \[NaOH\]. The reaction is exothermic and the heat evolved causes the decomposition of hydrogen peroxide.                 \[2N{{a}_{2}}{{O}_{2}}+2{{H}_{2}}O\xrightarrow{{}}\,4NaOH+{{O}_{2}}\]