A small amount of $M n O_{2}$ is added to $H_{2} O$ taken in a test tube.
(a) Suggest an experiment to identify the gas liberated.
(b) Write the chemical equation of the reaction taking place.
(c) What is the role of $M n O_{2}$ in this chemical reaction?

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Solution

(a) Decomposition of hydrogen peroxide in the presence of the catalyst manganese dioxide liberates of oxygen gas.
(b) $2 H_{2} O_{2} M n O_{2} - --- \to 2 H_{2} O + O_{2}$
(c) $M n O_{2}$ acts as a catalyst and increases the speed of the reaction without itself undergoing any chemical change.

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A small amount of MnO2 is added to H2O taken in a test tube.(a) Suggest an experiment to identify the gas liberated.(b) Write the chemical equation of the reaction taking place.(c) What is the role of MnO2 in this chemical reaction?

(a) Decomposition of hydrogen peroxide in the presence of the catalyst manganese dioxide liberates of oxygen gas.(b) 2H2O2MnO2−−−−→2H2O+O2(c) MnO2 acts as a catalyst and increases the speed of the reaction without itself undergoing any chemical change.

A small amount of $M n O_{2}$ is added to $H_{2} O$ taken in a test tube.
(a) Suggest an experiment to identify the gas liberated.
(b) Write the chemical equation of the reaction taking place.
(c) What is the role of $M n O_{2}$ in this chemical reaction?

(a) Decomposition of hydrogen peroxide in the presence of the catalyst manganese dioxide liberates of oxygen gas.
(b) $2 H_{2} O_{2} M n O_{2} - --- \to 2 H_{2} O + O_{2}$
(c) $M n O_{2}$ acts as a catalyst and increases the speed of the reaction without itself undergoing any chemical change.