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  4. In the reaction, H2O2 (aq) xrightarrowI-(aq) H2O(I)+(1/2) O2(g) iodide ion acts as

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Q. In the reaction, $ H_{2}O_{2} (aq) \xrightarrow{I^{-}(aq)} H_{2}O(I)+\frac{1}{2} O_{2}(g)$ iodide ion acts as

MHT CETMHT CET 2019Surface Chemistry

Solution:

For the reaction,

$H _{2} O _{2}( aq ) \xrightarrow{ I^-(aq) } H _{2} O (I)+\frac{1}{2} O _{2}(g)$

lodide lon acts a homogenous catalyst as the phase of $I ^{-}$ and reactant, $H _{2} O _{2}$ is aqueous (same)