Scelta multipla
Why does increasing the surface area cause a reaction to proceed more quickly?
251
views
15. Chemical Kinetics
Factors Influencing Rates
Scelta multipla
Which of the following would most effectively increase the rate of decomposition of hydrogen peroxide (H2O2)?
A
Diluting the hydrogen peroxide solution with water
B
Adding manganese dioxide (MnO2) as a catalyst
C
Removing light from the reaction environment
D
Lowering the temperature of the reaction mixture
Guida verificata passo dopo passo1
Understand that the rate of decomposition of hydrogen peroxide (H\_2O\_2) can be influenced by factors such as concentration, temperature, presence of catalysts, and environmental conditions like light exposure.
Recall that catalysts increase the rate of a chemical reaction by providing an alternative reaction pathway with a lower activation energy, without being consumed in the process.
Analyze each option: Diluting the solution decreases concentration, which generally slows down the reaction rate according to the rate law; removing light may reduce photochemical effects but is not the primary factor here; lowering temperature decreases kinetic energy, thus slowing the reaction.
Recognize that adding manganese dioxide (MnO\_2) acts as a catalyst for the decomposition of hydrogen peroxide, significantly increasing the reaction rate by lowering the activation energy.
Conclude that among the given options, adding MnO\_2 as a catalyst most effectively increases the rate of hydrogen peroxide decomposition.
Video correlati
Pratica correlata
