Multiple Choice
How would adding the catalyst nitrogen monoxide (NO) affect the reaction 2SO2(g) + O2(g) → 2SO3(g)?
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15. Chemical Kinetics
Catalyst
Multiple Choice
Which of the following substances can be used as a catalyst to speed up the decomposition of hydrogen peroxide (H_2O_2)?
A
Sodium chloride (NaCl)
B
Glucose (C_6H_{12}O_6)
C
Manganese dioxide (MnO_2)
D
Calcium carbonate (CaCO_3)
Verified step by step guidance1
Understand that a catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process.
Recognize that the decomposition of hydrogen peroxide (H_2O_2) is a reaction that can be catalyzed by certain substances to produce water and oxygen gas.
Recall that manganese dioxide (MnO_2) is a well-known catalyst for the decomposition of hydrogen peroxide because it provides a surface that lowers the activation energy of the reaction.
Evaluate the other substances: Sodium chloride (NaCl), glucose (C_6H_{12}O_6), and calcium carbonate (CaCO_3) do not have catalytic properties for this reaction and typically do not speed up the decomposition of H_2O_2.
Conclude that manganese dioxide (MnO_2) is the correct catalyst to use for speeding up the decomposition of hydrogen peroxide.
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