This website uses cookies to ensure you have the best experience. Learn more

To Determine The Rate Law Of A Chemical Reaction

434 words - 2 pages

Aim: To determine the rate law of chemical reactionsIntroduction: The aqueous solution of potassium peroxydisulphate can oxidize potassium iodide as follow:Equation:K S 0 (aq) + 2KI (aq)->2K S0 (aq)+I (aq)2 2 8 2 4 2KI(aq) +I (aq) -> KI (aq)2 3_________________________________________________K S 0 (aq) +3KI(aq) -> 2K S0 (aq)+ KI (aq)2 2 8 2 4 2The rate law of this reaction can be represented as follow:Rate=k[S208 2-]^a [I-]^bWhen the concentration of peroxydisulphate ions is fixed, the order of reaction with respect to iodide ion is formed.Alos, when the concentration of iodide ion is fixed, the order of reaction with respect to peroxydisulphat can be found.It is important to keep the same volume of solution in each trial.To determine the order of this reaction, the initial rate method is applied.This experiment is often known as the 'iodine clock' experiment.Materials and apparatus:1) 100cm3 beaker2)burette3)0.1M K2S2084)0.1M KI5)0.002M K2S2086)starch7)water8)test tubes9)stop watchPrecautions:1) The stop watch should be started after the potassium peroxysulphate solution just mixed with potassium iodide.2) Drawes a cross on a white paper that will be easier to observe the intensity of dark blue intensity.Procedures:1. KI,starch and sodium thiosulphate were mixed into a boiling tube following the table which was an attachment(Data treament).2. The mixture was transferred to a 100cm3 beaker.3. The exact amount of sodium peroxydisulphate was added in a boiling tube to the mixture in (2) as soon as possible. At the same time, the stop watch was stared.4. The time for the solution to turn dark blue was recorded.Data Treatment and the result and calculations:






Volume of
0.1M S208

10 cm3

10 cm3

10 cm3

9 cm3

8 cm3

Volume of
0.1M KI

1.5 cm3

2.5 cm3


Find Another Essay On To determine the rate law of a chemical reaction

How the rate of reaction changes in a reaction between Hydrochloric Acid and Sodium Thiosulphate

1118 words - 4 pages the end result chemical in a large beaker in the fume cupboard and not down the sink, we also need to make sure we do not lean over the conical flask when we perform the experiment because the chemical fumes are pungent and are not good to breath in.Method.We are going to measure the rate of reaction by how fast or slowly the mix of chemicals and water goes cloudy by placing a piece of paper with a cross on it underneath the conical flask and all

Not The Chemical Kind of Reaction

779 words - 4 pages not like her, and descriptions of Zeena range from the charitably generic “grayish tinge[d]” (15) visage to the thoroughly horrid “microscopic cruelty” (23) of the lines on her face. What led Ethan to matrimony with this woman in the first place? The answer is a reaction to a situation, not a proactive decision. Zeena had come to help Ethan care for his ailing mother, and “when he saw her preparing to go away, he was seized with an unreasoning

Rate of Reaction Coursework

532 words - 2 pages faster the particles are going, the more energy they have. Fast moving particles are more likely to react when they collide. You can make particles move more quickly by heating them up (raising the temperature). Changing the Rate of a Reaction. There are 5 ways to increase the rate of a chemical reaction. They are all understood in terms of collision theory. The rate of a chemical reaction may be increased by 1) Raising the

Stoichiometry of a Chemical Reaction with a Gaseous Product

693 words - 3 pages Stoichiometry of a chemical reaction with a gaseous product. Kevin Platonov SCS22QG-15 Lau 3/10/14 Introduction In an equation of compounds, the number before the formula mean the number of atoms of each element talking part in the reaction. These number are the coefficients, and they can also mean the amount of moles in the compound. The equation has to be balanced so the final product is stable and so the maximum amount of each product is

Rate of Reaction Coursework

1198 words - 5 pages Investigate if changing the concentration of an acid will change the rate of the reaction when marble is dissolved in hydrochloric acid. Apparatus Marble Chips Conical Flask Hydrochloric Acid Gas Syringe Delivery Tube Stop Watch Fair Test To make the experiment a fair test I will use the same amount of acid for each concentration. I will do this by using a capillary tube because they are very accurate. I will use 3g of marble in each

Rate Of Reaction Investigation

888 words - 4 pages think to also further investigate I could use a different size or different shaped magnesium, to see how it influences the rate of reaction. The surface area being another factor. Below is the equipment and method I would use to perform this extension:

Lab Report Using a Chemical Titration to Measure Rate of Conversion of Hydrogen Peroxide to Water and Oxygen

2711 words - 11 pages decomposes to water and oxygen at a slow rate. Therefore a solution that contained 1.5% H2O2 at the time of preparation does not necessarily contain 1.5% H2O2 after storage. In addition, the preparation may not have been perfectly precise. To determine the amount of H2O2 initially present in your nominally 1.% solution, you need to perform all the steps of the procedure without adding catalase (enzyme) to the reaction mixture. This amount is known

To investigate the effect that surface area has on the rate of reaction

1130 words - 5 pages Aim: To investigate the effect of increasing surface area on the rate of reaction.Background information: Hydrogen peroxide is a chemical that consists of hydrogen and oxygen. Its chemical formula is H O . It is a colourless, syrupy liquid that has a sharp odour. It is unstable. Peroxidase is an enzyme which catalyses the reaction. Catalase is an enzyme present in the cells of plants and animals. It is an aerobic (requires oxygen) bacteria. It

Investigation: How does channging the concentration of a substance affect the rate of reaction?

3909 words - 16 pages A chemical reaction is the process by which atoms or groups of atoms are redistributed, resulting in a change in the molecular composition of substances.The reaction rate is how quickly a reaction occurs. I will be using the reaction rate during my investigation to see how the concentration of acid effects the reaction rate. To do this I will be using the following reactionHydrochloric + Calcium Ü Calcium + Carbon

Experiment to investigate factors affecting the rate of reaction between magnesium ribbon and hydrochloric acid

2245 words - 9 pages Experiment to investigate factors affecting the rate of reaction between magnesium ribbon and hydrochloric acid Rates of Reaction: Investigation Experiment to investigate factors affecting the rate of reaction between magnesium ribbon and hydrochloric acid. Chemical reactions between substances are caused by the collision of particles. More collisions mean a quicker rate of reaction. In the reaction between hydrochloric acid and magnesium

Investigation: How does the concentration affect the rate of a reaction?

1645 words - 7 pages Investigation:How does the concentration affect the rate of a reaction?Aim:To investigate the effect of concentration on the rate of a chemical reaction between sodium thiosulphate solution and hydrochloric acid.Reaction:I will investigate the reaction between different concentrations of sodium thiosulphate solution with hydrochloric acid.Na2S2O3(aq) + HCL(aq) = S(s) = H2O(l) + SO2(g) + NaCl(s)(sodium thiosulphate + hydrochloric acid = sulphur

Similar Essays

Exploring Factors That Affect The Rate Of A Chemical Reaction Involving Magnesium And Hydrochloric Acid

1581 words - 6 pages What factors affect the rate of this chemical reaction: Magnesium + Hydrochloric Acid  Magnesium Chloride + Hydrogen Mg (s) + 2HCl (aq)  MgCl2 (aq) + H2 (g) Prediction I think that my results will show that the hydrochloric acid with a molarity of 2 will finish reacting the quickest because it is the strongest hydrochloric acid and I predict that the slowest experiment to finish reacting will be the 0.4 molar strength of

Order Of Reaction / Rate Law

684 words - 3 pages rate of disappearance of A is proportional to the concentration of A. -∆A/∆t [A] The proportionality becomes an equation with the insertion of a constant (k). Rate = -∆A/∆t = k x [A] This equation, called a rate law, is an expression for the rate of a reaction on terms of the concentration of reactants. The specific rate constant (k) for a reaction is a proportionality constant relating the concentrations of reactants to the rate of

The Rate Law For Chemical Reaction Among Hydrogen Peroxide, Iodide, And Acid

3073 words - 12 pages The Rate Law for Chemical Reaction Among Hydrogen Peroxide, Iodide, and Acid To determine the rate law for a chemical reaction among hydrogen peroxide, iodide and acid, specifically by observing how changing each of the concentrations Experiment 3 Chemical Kinetics Objectives 1. To determine the rate law for a chemical reaction among hydrogen peroxide, iodide and acid, specifically by observing how changing each of the

To Study How Concentration Affects The Rate Of A Reaction

1105 words - 4 pages The Collision TheoryFor particles to react, they must collide. They must also collide with enough energy for a reaction to take place. The energy created is called activation energy. The more often and faster the chemicals collide, the stronger the reaction.Rate of ReactionThe rate of a reaction depends on four things:*Temperature - When the temperature increases the particles start to all move quicker. This means that there will be more