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P-1 Chemical reactions and equations — Science STD 10 — Question

Maharashtra BoardEnglish MediumSTD 10ScienceP-1 Chemical reactions and equations2 Marks
Question
Explain the following reactions giving their balanced chemical equations: Hydrogen peroxide is decomposed in the presence of manganese dioxide $\left( MnO _2\right)$.
✓

Answer

When hvdrogen peroxide is decomposed in the presence of manganese dioxide $\left( MnO _2\right)$, water and oxygen are formed.
$
2 H _2 O _{2( g )} \stackrel{ MnO _2}{\longrightarrow} 2 H _2 O _{( I )}+ O _2
$

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