How does an increase in reactant concentration affect the rate of reaction? it leads to more frequent collisions, which increase reaction rate. it leads to less frequent collisions, which increase reaction rate. it leads to more frequent collisions, which decrease reaction rate. it leads to less frequent collisions, which decrease reaction rate.

Option (a) is the correct answer.

Explanation:

According to collision theory, more is the number of molecules present in a chemical reaction more will be the number of collisions between them.

Therefore, when we increase the concentration of reactants then it means we are increasing the number of molecules.

Hence, we can conclude that out of the given options, an increase in reactant concentration will affect the rate of reaction because it leads to more frequent collisions, which increase reaction rate.  

explanation:

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.