Question

Which of the following chemical reactions expresses correctly the role of the catalyst in the reaction?

a) OA) reactant 1 + reactant 2 -> product 1
b) OB) reactant 1 + reactant 2 + catalyst => product 1
c) OC) reactant 1 + reactant 2 + catalyst → product 1
d) OD) reactant 1 + reactant 2 + catalyst → product 1 + catalyst

Answer 1

The correct answer expressing the role of a catalyst in a chemical reaction is OD) reactant 1 + reactant 2 + catalyst → product 1 + catalyst, where the catalyst is not consumed and can be reused.

Step-by-step explanation:

The role of a catalyst in a chemical reaction is to speed up the reaction without being consumed by it. Therefore, the correct chemical reaction that expresses the role of the catalyst is OD) reactant 1 + reactant 2 + catalyst → product 1 + catalyst. After the reaction has occurred, the catalyst remains unchanged and can be recovered.

Additionally, in question 13 and 14, the reactions can be identified as:

• (a) Synthesis reaction
• (b) Acid-base neutralization reaction
• (c) Combustion reaction
• (a) Water gas shift reaction