What causes the concentration of reactants to affect the reaction rate?
A. It changes the molecular shape, removing orientation requirements.
B. It breaks bonds that would have needed special orientation.
C. It makes molecules less sensitive to proper orientation.
D. It increases the number of collisions at the right orientation.
Answer (2)
The concentration of reactants affects reaction rate by increasing the number of collisions between reactant molecules. When there are more particles in a given volume, the likelihood of effective collisions, which need the correct orientation, also rises. Thus, it is correct to say that higher concentrations enhance the chances of reactions occurring successfully. ;
The concentration of reactants affects the reaction rate by increasing the frequency of collisions between reactant molecules. With higher concentrations, the likelihood of effective collisions with the proper orientation also rises, leading to faster reactions. Therefore, the correct answer is D.
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