The Effect Of Fast Reactants On The Rate Of A Chemical Reaction

Changes in the rate of reaction can be described in terms of chemical equilibrium. “Chemical equilibrium is a state in which the forward and reverse reactions take place at the same rate” (Wilbraham et al, 2002). The

Limiting Reactant Lab Abstract The purpose of this lab was to use stoichiometry (fixed molar ratios) to determine quantitatively how Copper (II) Chloride and metallic aluminum react, known as an oxidation-reduction reaction. By varying the quantities of CuCl2H2O and Al and observing the reaction we were able to determine the limiting and excess reactants, and were also able to use stoichiometric calculations to determine the theoretical yield of Cu and then compare it to the actual yield of Cu to determine the percent yield of the reaction, which was found to be 22.5%. The percent yield of this experiment was less than desirable due to the fact that not enough Al was added to fully react all of the Cu. Using stoichiometry it was determined

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

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

In this experiment it was observed that not all chemical reactions occur at the same rate. Chemical reactions occur when one or more substances are changed into other substances. The properties of a chemical reaction require three things. First, they need a source of energy for molecules to encounter each other. Second, they require to proceed at a steady rate. Third, they must proceed in a particular direction until they reach equilibrium. There are two types of chemical reactions that can occur: endergonic and exergonic reactions. In these reactions there are both reactants and products. In exergonic reactions the reactants (starting materials of a reaction) are higher than the products (results of a reaction). This is opposite for endergonic

To determine what factors influence the rate of a chemical reaction and to make predictions based on these

The rate of a reaction varies at different temperatures and reactant concentrations. In this experiment, the orders and dependence of the rate constant of the products used are determined by the following chemical reaction:

Specifically in this reaction the limiting reagent is Calcium Chloride, CaCl2 and the factor that will be changed periodically in this reaction is the amount in grams of the Sodium Carbonate and Calcium Chloride and if the experiment is right, as the mass of the limiting reagent Calcium Chloride increases the mass of the reactant Calcium Carbonate will also increase, hence the percent yield of the product will also increase.

A chemical reaction is usually accompanied by easily observed physical effects, such as the emission of heat and light, the formation of a precipitate, the evolution of gas, or a color change. Absolute confirmation of a chemical change can only be validated by chemical analysis of the products. There are many different types of chemical reactions. Scientist have classified the many different reactions into categories. The five major categories are combination or synthesis reaction, decomposition reaction, displacement or replacement reaction, acid base reactions, and combustion

The rate law of a reaction relates the concentration of the molecules involved in the reaction to time, allowing us to determine how fast the reaction proceeds and what the reaction mechanism is. Based on the data given on the reaction rate of A and B, we can find the order of the reactants and the average rate constant for the experimental rate law.

The rate of a chemical reaction often depends on reactant concentrations, temperature, and the presence of a catalyst. Additionally, the rate law is determined mathematically only from experimental data. The reaction investigated in this experiment is:

The experiment was carried out to investigate the effects of the increase in the enzyme concentration on the rate of reaction. By using self investigative and experimental skills, the experiment was done in order to determine how the rate of reaction will be altered, whether it will increase, decrease or remain constant when the different concentration of enzymes added.

Therefore, it can be seen using the collision theory that the more concentrated the reactants are, the more likely the molecules will collide and consequently speed up the reaction rate. This has been justified in the experimental results, when the more concentrated hydrochloric acid was, the faster the reaction rate. As shown in Experiment 1, where three different concentrations of hydrochloric acid were used. In Beaker 1, 0.5 M of hydrochloric acid was used, Beaker 2 was 1M, and in Beaker 3, 2M of hydrochloric acid was tested. It was shown in the experiment that the first beaker of 0.5M HCl took the longest to go cloudy, around 44 seconds. Beaker 2 had 1M of HCl and took 38 seconds, which was approximately 6 seconds faster than Beaker 1. In Beaker 3, 2M of HCl was added and it was the fastest of all three, taking 33 seconds, which was 11 seconds faster than Beaker 1, and 5 seconds quicker than Beaker 2. These results demonstrate that the concentration of the reactants does affect reaction rate as it was shown that an increase in the concentration of HCl meant that the reaction rate sped up, and vice

Concentration, Surface area, and Temperature) that played a role in controlling rate of reaction and record observations and key characteristics that were found when altering the standard composition of each factor. At the end of the investigation, there was a clear pattern that was present throughout all three factors. As you increase anything whether it be concentration, temperature, or surface area, the rate of reaction increased also. By increasing temperature, the speed of molecules increases encountering a larger quantity of other molecules increasing collisions and rate of reaction. This was clear in our observations table as our results show that warmer the temperature, the quicker the rate of reaction.

Kinetics of chemical reactions is how fast a reaction occurs and determining how the presence of reactants affects reaction rates. In this experiment the rate of reaction for Fe+3 and I- is determined. Because the rate of chemical reactions relates directly to concentration of reactants, the rate law is used to find the rate constant, and calculated with specified temperatures.