Question

Name two compounds which retards the decomposition of hydrogen peroxide.

Answer 1

Answer: Phosphoric acid and glycerol.

Explanation: The retardation of decomposition of hydrogen peroxide ( $H_2O_2$ ) is accomplished by Negative Catalysts.

Negative catalyst are the catalysts which reduces the rate of the reaction by lowering down the activation energy of the reaction.

Addition of phosphoric acid and glycerol slows down the decomposition of hydrogen peroxide.

Decomposition of $H_2O_2$ can be given as:

$2H_2O_2((aq)\rightarrow 2H_2O+O_2(g)$