Investigating the Kinetics of the reaction between Iodide ions and Peroxodisulphate (VI) ions (entire plan)

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

The importance of conducting this experiment is to discover the rate reaction of the Landolt Iodine Clock. This reaction is used to display the chemical kinetics in action, it was discovered by Hans Heinrich Landolt in 1886. It is where two colourless solutions are combined and no instant change appears but over a certain time delay depending on the factors it will instantly change to a dark blue. The Chemical kinetics of the reaction refers to the rate of the reaction. Different reactions occur at different rates, for example if it is a proton transfer reaction which is an acid-base reaction it will often occur at a faster rate. When the molecules collide in the reaction they must have a sufficient amount of kinetic energy so that the reaction can be initiated. The amount of kinetic energy is generally dependant on the temperature of the reaction, at higher temperatures there is a higher rate of reaction because of the increase of kinetic energy in the reactant molecules.

Introduction: The rate of a reaction is the speed at which a chemical reaction happens. If a reaction has a low rate, that means the molecules combine at a slower speed than a reaction with a high rate. Some reactions take hundreds, maybe even thousands, of years while others can happen in less than one second. (Chem for Kids, 2016). Reactions require collisions between reactant molecules or atoms. The formation of bonds requires atoms to come close to one another. New bonds can form only if the atoms are close enough together to share electron. Higher temperatures make the collisions between molecules more violent. The higher temperatures mean higher velocities. This means there will be less time between collisions. The frequency of collisions will increase. (Chem, 1999) H2O2 is the chemical formula for hydrogen peroxide. The decomposition of hydrogen peroxide will break down into oxygen and water.

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

Usually an increase in temperature in a chemical reaction means that there will be an increase in the reaction rate of the reactants. Temperature is a measure of the kinetic energy of a system. If temperature is the measure of the kinetic energy of a system, higher temperature implies a higher average kinetic energy of molecules and more collisions per time. This would happen because when the temperature is increased and the reactants will start moving faster and will collide more than before with other reactants and will start forming products.

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

These equations can only be carried out and be visible after the iodine has completely reacted with thiosulphate added – two moles of thiosulphate for every mole of iodine. Once all the thiosulphate has been used up in the reaction, the colour will start to appear.

4) Try and propose a mechanism for the reaction using the orders of reaction taking into account the iodine, propanone and sulphuric acid.

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

When the reactants are heated, the rate generally increases. When the reactants are cooled, the reaction generally goes slower. According to the collision theory, particles must collide in order to react. Heat gives the particles more energy to move around and so they increase their speed. This increases the chances of a collision, and more importantly a successful one, as they are hitting each other with greater force with increased energy.

There are the factors that can have impacts on the reaction rate of the compounds. As mentioned in the collision theory (John Green & Sadru Damji), (Green, 2014) these factors involve the concentration of substances. This experiment will also determine the concentration of H_2 O_2 on iodide

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.

The activation energy lab centralized on observing the effect that temperature has on the rate of the reaction 6I- (aq) + BrO3- (aq) + 6H+ (aq) 3I2 (aq) + Br- (aq) + 3H2O while also using calculations to determine the value of the rate constant and the activation energy at different temperatures. The activation energy of a reaction is defined as the minimum amount of energy required to make the transition from reactants to products. Given that the rate constant is proportionally constant for an experiment, it changes with temperature. By keeping the concentrations of the reactants constant, the effect of temperature on the rate was able to be determined.

In everyday life, several reactions are encountered, but still knowledge on how fast these occur and the factors affecting it were still insufficient. This study

The key aim of this experiment was to determine the rate equation for the acid-catalysed iodination of acetone and to hence consider the insinuations of the mechanism of the rate equation obtained.