Study carefully the reaction represented by the equation below. 2H2O 2(l) → O 2(g) + 2H2O(l). Which of the following will not reaction increase the reaction rate?
A
Heating the hydrogen peroxide
B
Adding a pinch of MnO2 to the reactant
C
increasing the concentration of the H2O2
D
Adding water to the reactant
E
Exposing the reactant to sunlight
Verified Correct Answer: D.
Chemical Principles & Mechanism
Reaction of decomposition of hydrogen peroxide is very slow in moderate temperatures without the presence of a catalyst.
It can be sped up by increasing the temperature, which triggers the reaction of thermal decomposition.
Source: WAEC / JAMB / NECO Classroom Archive (Record #36178)