Potassium permanganate crystals decompose to release O₂(g) when heated
CHEMISTRY · Single correct · A Level · Chemistry · Kinetics · Kinetics
Problem
Potassium permanganate crystals decompose to release O₂(g) when heated. Which of the following changes to the experimental setup would most significantly increase the initial rate of oxygen production?
(a) Doubling the mass of uncrushed crystals while keeping the temperature constant.
(b) Carrying out the reaction in a closed vessel at higher initial pressure.
(c) Crushing the crystals to a fine powder before heating at the original temperature.
(d) Using larger crystals but raising the temperature by 5∘C.