The Difference Between The Temperature Of A Mixture With Hydrochloric Acid

1. For this experiment, what were the independent variable and the dependent variable? What were the constants?

Temperature is a measure of kinetic energy. As this movement increases, collision rate and intensity, and therefore reaction rates, increase. This experiment was conducted to determine if there is a minimum temperature that increase kinetic energy and denature enzymes to slow enzymatic reactions or fail to catalyze them. The experimental results indicate an increase in temperature will increase reaction rates until proteins denature.

9. Does temperature have any effect on reaction rate? If so, why does it occur?

3. From your data in Table 1, what is the relationship between temperature and rate of reaction?

By heating to refluxing, the temperature and thermal energy were controlled during the experiment. Heating the reaction is important because it is required in order for the bonds to break to cause a chemical reaction. Breaking bonds also means requiring energy and that is where activation energy comes into play. All chemical reactions has to overcome an energy barrier to generate the product from the reactant.

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.

Temperature: Temperature is an extremely important variable to consider, as it can affect the rate of reaction in a number of ways. If the temperature of a system is increased, more molecules will reach the activation energy and the rate of reaction will increase. The number of collisions will also increase. As enzymes must collide with substrates, an increase in temperature and thus kinetic energy will result in more collisions occurring in a given time. Increasing the temperature will also increase the heat of the molecules.

Independent variables are not dependent to anything, Independent variables can be changed, and manipulated to work however the experimenter wants it to work. So to speed up the reaction with Solution A, Solution B will be decreased. The less Solution B there is the less time it takes for Solution A to react with S.B. If there is less S.B there will be an instant/almost instant reaction for the two chemicals to create the rich blue substance. Solution B will be decreased by 2mL in 5 trials. Solution A will stay the same since only Solution B Is being changed and there can be only on the variable change to make the result/conclusion valid/accurate.

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.

Dependent Variable: Rate of hand squeezes on the hand strengthener. Number of times the strengthener is squeezed (50) / time it takes to complete squeezes (seconds)

The objective of this experiment was to allow one to grasp a thorough understanding of chemical reactions and the way they occur in chemistry. The study of chemical kinetics is known as reaction rates, which occur at different speeds. The speed of chemical reactions are dependent on four factors. The main factors that contribute to altering the speed are: the nature of the reactants, the concentration of the reactants, the presence of a catalysis and lastly, temperature (CHCKY107 General Chemistry Lab Manual Spring 2018). By incrementing the temperature in a chemical reaction, this incrementation in heat will accelerate the process, creating more collision in particles as which because they are more motion, creating an increase in kinetic

Introduction: The theory behind this experiment is the heat of a reaction (∆E) plus the work (W) done by a reaction is equal to

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

Statement of Inquiry: What is the effect of changing a factor on the rate of chemical reaction?

The reaction time (in seconds) is the dependent variable of this experiment. This will be changed by the temperature of the chemicals, and as it is affected by the independent variable it is considered the dependent variable.