Question

At which of the following temperatures is the speed of a given chemical reaction the fastest?

10 °F

20 °F

30 °F

40 °F

Answer 1

Generally speaking, the rate of a chemical reaction depends on a number of variables including temperature. The rate of a reaction is proportional to the temperature, as the temperature increases, the rate of reaction will increase. The reason being for this is that for the reaction to take place, the molecules must interact with one another in the form of collisions. As the temperature increases, energy is being added to the system which is absorbed by the molecules resulting in an increase in the velocity of these particles. The molecules begin moving must faster as temperature increases and this ultimately leads to more collisions between particles. An increase in collisions will allow more individual reactions to occur and this will lead to an increase in the rate of the reaction.

Therefore, the speed of a given chemical reaction will occur the fastest at 40 °F.

Answer 2

There are many factors that affect the rate of chemical reactions and temperature is one of them.
Typically, the higher the temperature of a chemical reaction the faster the reaction occur, that is, the temperature and the rate of chemical reaction are directly related. This is due to the fact that increasing the temperature of the reaction increases the kinetic energy of the reacting particles and thus they are able to move faster and the reaction also occur faster. Thus, from the options given, the correct answer will be D [40 degree], this is because, it is the highest temperature out of all the options given.