Why Reaction Rate Is Faster If The Temperature Is Increased

In reference to the collision theory, molecules act as small spheres that collide and bounce off each other, transferring energy among themselves when the collide. In order for a reaction to occur, there must be collisions between molecules. Through experimentation, factors are discovered that influence the reaction rates of chemical reactions include the concentration of reactants, temperature, surface area, the physical state of reactants, and a catalyst. This experiment regarding the factors that affect reaction rate tests the effects of increased concentration and

Introduction: Alka-seltzer contains three active ingredients, aspirin, sodium hydrogen carbonate and citric acid. It is used for headaches, migraines, and cold and flu symptoms. Alka-Seltzer is usually taken when dissolved in a glass of water. When placed in water a series of chemical reactions result into Sodium citrate and Sodium acetylsalicylate. The sodium citrate would act as the antacid for stomach pains, and the sodium acetylsalicylate would act as the pain reliever.

Hypothesis: If the temperature of the sodium thiosulfate is increased, then the time it takes the precipitate to form will decrease therefore leading to the rate of reaction to increase as well. This can be explained as the temperature increases, the particles in the molecule will be moving more rapidly and hence as they move quicker, they will be colliding with other particles more frequently and with more energy. This energy will likely overcome the activation energy barrier and break the initial bonds and therefore produce a successful reaction and due to the increase in frequency of collisions, the time it takes the precipitate to form will decrease and since the product/precipitate is produced faster, therefore the rate of reaction will increase.

Temperature controls the speed the enzymes work at. Higher temperatures increase the kinetic energy which increases the chance of collision therefore speeding up the rate of

As the temperature increases, so will the rate of enzyme reaction. However, as the temperature exceeds the optimum the rate of reaction will decrease.

Many factors effect reaction rates, two shown above include temperature and concentration. Concentration affects the rate of reactions because the more concentrated a solution the more likely collisions between particles will be. This is simply because there are more particles present to collide with each other. When the temperature is higher, particles will

Question: How does changing enzyme concentration or temperature affect the reaction time of enzyme activity?

This image explains that the higher the temperature, the concentration, and the pressure the faster the rate of the reaction is.

The hypothesis tested in this experiment was, if the temperature of enzyme catalysis were increased, then the reaction rate would increase, because enzyme-catalysis reacts by randomly colliding with substrate molecules, and the increase in temperature increases the speed of collision or reaction rate. The final data collected for the experiment was positive with my hypothesis. The coffee filter, covered in potato solution, sank and rose at a faster pace in the hydrogen peroxide when the temperatures were raised.

Therefore, increasing temperature will result in greater number of reactant molecules with kinetic energy greater than the required activation energy, which results in more successful collisions.

If the acid is made more concentrated there are more particles, which means collisions are more likely. So, the higher the concentration, the quicker the reaction time is. Temperature also affects the rate of reaction. If the temperature is increased, the particles move quicker so more collisions happen. This means the higher the temperature, the

An experiment that explores how temperature is used to speed up a reaction rate is the use of light sticks or glow sticks. If a light stick is refrigerated, once the seal is broken, the reaction will slow down and the light stick gives off light for longer periods of time. If the glow stick is room temperature, the reaction will speed up and the light goes out faster. Heat can be used to speed up a reaction to see the reaction occur quickly. The more energy molecules have, the more they combine. Conversely, scientist often use ice water to slow down reactions. When molecules have less energy, it takes them longer to combine.

Collision theory states that the orientation and kinetic energy of molecules/atoms determine how fast (if at all) a reaction happens. Therefore, molecules that collide while facing the incorrect orientation, or at an inadequate speed, do not react. Correspondingly, molecules colliding at a faster pace increases the likeliness of colliding

reaction rate increases. If the temperature of an enzyme gets to high the reaction rate will slow

was too fast to measure and so for my scale to reach above that, I