How does changing the temperature affect the chemical reaction?
A) Solubility of the solutes and the reaction rate are increased as the temperature of the reaction is decreased.
B) Lowering the temperature of the chemical reaction increases the concentration of the solute and the reaction rate.
C) Raising the temperature of the reaction increases the reaction rate by increasing the energy and frequency of collisions.
D) Concentration of the solute and pressure of the solution decreases as the temperature of the chemical reaction increases.

C

Explanation:

Temperature is directly related to kinetic energy (KE). As we raise temperature, we are raising KE, as well. Particles with more KE move more quickly and with more force.

This means that these particles are more likely to collide with each other and react to allow the chemical reaction to follow through. In turn, if the chemical reaction is more likely to go to completion, the reaction rate increases, eliminating A and B.

The concentration of the solute is not affected by the temperature; in other words, temperature will not increase or decrease the amount of solute in the solution, so eliminate D.

Thus the answer is C.

Hope this helps!

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