Chemical Reaction Lab

The rate of a chemical reaction often depends on reactant concentrations, temperature, and if there’s presence of a catalyst. The rate of reaction for this experiment can be determined by analyzing the amount of iodine (I2) formed. Two chemical reactions are useful to determining

What is the percentage yield of the reaction of iron and copper chloride when steel wool and copper chloride dehydrate are used as reactions?

Another form of the Clausius-Clapeyron equation is ln Subscript[P, 2]/Subscript[P, 1]=\[CapitalDelta]H/R ((1/Subscript[T, 1])- (1/Subscript[T, 2])).^2

Is this a linear relationship? What happens to the initial reaction rate as substrate concentration increases? The relationship between each individual reaction is linear. As substrate concentration increases the initial reaction rate increases fast at first, then slowly, then stays constant from 4.0g of substrate to 8.0g of substrate.

Introduction The purpose of this lab was to test the rate at which the catalyst enzyme reacts and how temperature affects it. Enzymes help to speed up reactions within objects by providing an alternative low energy route for the reaction to occur. In order for a reaction to occur two molecules must collide with each other. The substrate, molecule colliding with the enzyme then locks into it, allowing the enzyme to begin breaking it down.

The Effect of pH on Reaction Times INTRODUCTION Ever since scientists discovered the importance of the water molecule in everyday life on earth, it has been understood that all chemical reactions occur at different rates when compared to each other. A chemical reaction is the reaction between two or more molecules when they are either mixed with each other or put in close proximity of each other. Two types of chemical reactions are exothermic and endothermic; exothermic chemical reactions release heat as a by-product of the reaction into the area around it, on the other hand endothermic chemical reactions absorb heat during the reaction and make the area around it cooler.

Fundamental of Science (Assignment 1) Measuring Quantities for Chemical Reactions P1 1. The atom is mainly made up of two specific regions : the positively charged nucleus made up of protons and neutrons, and the shells (orbitals) in which electrons are present, were they orbit around the positively charged nucleus to create a neutral atom. The Atoms are thus made up of three subatomic particles: The proton, neutrons and electrons. The protons are positively charged while the electrons are negatively charged, and the neutrons are neutral.

In this equation, k is equal to the rate constant; variables [A] and [B] are equal to the concentration of the reactants, where m and n are the reaction orders to each respective reactant. The reaction orders must be determined experimentally. To derive a rate law, the concentration

Activation energy is the energy, which needs to be supplied before a reaction can occur, basically the

Introduction The reaction rates provide important information concerning the factors that control the speed of a chemical reaction or the steps that occur in complex mechanisms of a chemical reaction in a study called chemical kinetics. The most common factors that affect the reaction rate are concentration, temperature and actions of catalyst. The rate of reaction is ( Rate=k[A]n[B]m) which is written in rate law expression. Reaction rates may be determined by following the appearance of disappearance of chemical substance or the change in a characteristic property.

After determining the rate law, the activation energy was determined by changing the temperature at which the reaction took place. Using the rate constants calculated at the two different temperatures, the activation energy was calculated. It was found, experimentally through the method of

Chemical kinetics involving reaction rates and mechanisms is an essential part of our daily life in the modern world. It helps us understand whether particular reactions are favorable and how to save time or prolong time during each reaction. Experiment demonstrated the how concentration, temperature and presence of a catalyst can change the rate of a reaction. 5 runs of dilution and reaction were made to show the effect of concentration on chemical reactions. A certain run from the previous task was twice duplicated to for a “hot and cold” test for reaction rate. The prior run was again duplicated for a test with

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

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.

To find the value of the pre-exponential factor, ������������ , and activation energy, ������, would require linearizing the Arrhenius equation given as: k = k o ������ −������������ , where R is the gas constant and T is the temperature the given k is at in degrees Kelvin. Equation 8 is linearized by taking the natural log of both sides: ln(k) = ln(k o ) − E . RT