Rate of a chemical reaction is not affected by the____________________?
Correct answer: B. Number of molecules of reactants taking part in the reaction
- A. Catalyst
- B. Number of molecules of reactants taking part in the reaction
- C. Reactant's concentration
- D. Temperature
Explanation
Reaction rate is governed by factors such as reactant concentration, temperature and catalytic effects, not by simply counting the molecules participating. The number of molecules is reflected indirectly through concentration, but is not an independent rate variable.
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