Identify role of glycerol in following reaction. $2 \mathrm{H}_2 \mathrm{O}_{2(\ell)} \xrightarrow{\text { glycerol }} 2 \mathrm{H}_2 \mathrm{O}_{(\ell)}+\mathrm{O}_{2(\mathrm{~g})}$

The decomposition of hydrogen peroxide $2\mathrm{H}_2\mathrm{O}_{2(\ell)} \xrightarrow{\text{glycerol}} 2\mathrm{H}_2\mathrm{O}_{(\ell)}+\mathrm{O}_{2(\mathrm{~g})}$ is catalyzed by many substances but inhibited by others.
Glycerol functions as a stabilizer that reduces the decomposition rate, indicating it acts as an inhibitor.

The correct classification is B: inhibitor.