Which substance acts as a catalyst in the given reaction?
NO2 + SO2 = NO + SO3
In this reaction, the substance that acts as a catalyst is NO2.
In the given reaction, the substance that acts as a catalyst is NO2.
To determine the substance that acts as a catalyst in the given reaction, we need to understand the definition of a catalyst. A catalyst is a substance that increases the rate of a chemical reaction without being consumed in the process. In other words, it participates in the reaction but is not used up or permanently altered.
In the reaction provided, the substances NO2, SO2, NO, and SO3 are all reactants or products, but none of them are catalysts by definition. If a catalyst were present, it would be listed separately from the reactants and products.
Therefore, based on the information given, it appears that there is no catalyst involved in the reaction:
NO2 + SO2 = NO + SO3