How Does The Concentration Of Hydrochloric Acid Affect The Rate Of Reaction

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

This experiment was designed to illustrate the relationship between quantities of reactants and the amount of product produced by a chemical reaction. When a chemical reaction occurs, there is usually a limiting reagent, which is the chemical that is totally consumed at the end of the chemical reaction, and the reagent that limits the amount of product that can be formed. The purpose of this lab was to determine which reactant was the limiting reagent and to see how much of the other reactant was used. The reaction tested in this experiment was between Copper (II) Chloride and Aluminum metal.

How concentration affects the rate of reaction between Hydrochloric Acid and Sodium Thiosulphate Chemistry Coursework How Concentration Affects a Reaction Aim: The aim of this experiment is to find out how concentration affects the rate of reaction between Hydrochloric Acid and Sodium Thiosulphate. Introduction: This experiment will be carried out by drawing a cross on a piece of paper and mixing hydrochloric acid and sodium thiosulphate together to see if the cross disappears. The concentration of hydrochloric acid would change every reaction to show that concentration effects a reaction.

It is to tell how the reaction between magnesium and hydrochloric acid will be effected if we change the concentration of hydrochloric acid.

Hypothesis: If the concentration of a substrate increases, any time an enzyme happens upon a substrate it will be free to help that substrate react, but then when an enzyme encounters a new substrate at a slightly higher concentration it will already be working on another substrate, therefore, as we increase substrate concentration it is not going to increase as fast as the reaction rate.

Marble, or calcium carbonate, is a fairly insoluble compound with the chemical formula CaCO3. This compound has a carbonate ion, which has a charge of -2 and a calcium ion, which has a charge of +2. Calcium carbonate has a few forms including chalk and limestone. The main use of these two materials is in the making of concrete, which is used for many things including buildings. The rate of the reaction is the speed that the reaction takes place; therefore, by measuring the rate, the amount of time the reaction takes will be measured. Hydrochloric acid is a stronger acid that is found in digestive juices in the human stomach and is also used for cleaning metals before they are coated. When you mix a strong acid like HCl with any carbonate you will have a chemical reaction in which CO2 gas is released. This means that it will fizz indicating a chemical reaction. These two elements can react with hydrochloric acid to yield carbon dioxide, calcium chloride and water. The chemical reaction equation for hydrochloric acid and calcium carbonate is:

1. The concentration within a reaction is determined by the rate of concentration fluctuations of both sides of the reaction. Increasing the quantity of the species, that is the molarity of the subject system, increases the rate of reaction. This happens by adding more of a species to a consistent volume increasing the probability of collisions. By Adding more of a constituent, you decrease the probability of both of the constituents not interacting. It could be the case that changing these concentrations, in comparison to others, could have a relatively more exponential amount of impact on the equilibrium. By either increasing the amount of either the products or reactants, you incite the system to proportion them to the previously consistent

When two different chemicals react, the molecules of the chemicals have to collide with each other. If they do collide with enough energy it will become a successful collsion. The two molecules will only react if they have enough energy. By adding heat to the mixture this will increase the reaction levels as it supplies more energy to the molecules. Increasing temperature will mean the molecules move around quicker. This describes kinetic energy. I didn’t pick temperature as a variable because it would be very hard to control. We did do all the experiments in the same classroom to try and keep this the same.

The results obtained clearly prove the hypothesis stated as the average rate of reaction of the chalk and acid increased as the temperature changed from iced water, to room temperature, to boiling water. The average rate of reaction in seconds in room temperature water was 57.34, this decreased to 68.93 seconds when the chalk was placed in iced water and then when placed in boiling water there was a dramatic increase in the rate of reaction to 23.77 seconds.

As seen in figure 1, the amount of oxygen increased from 20.75% to 22% rapidly between 20 and 30 seconds. There was also an aggressive increase between 170 and 180 seconds from 27.1% to 28%. Otherwise, the increase was relatively stable, with slight increases and decreases throughout. On the other hand, when an acid and base (hydrochloric acid and sodium hydroxide, respectively) were added to the reactive solution, the increase was relatively stable for the acid, while inconsistent for the base, in general.

Collision theory states that the orientation and kinetic energy of molecules/atoms determine how fast (if at all) a reaction happens. Therefore, molecules that collide while facing the incorrect orientation, or at an inadequate speed, do not react. Correspondingly, molecules colliding at a faster pace increases the likeliness of colliding

To investigate the different concentrations of hydrochloric acids, to compare the reaction rate between the different concentrations and determine how concentration effects the rate of reaction. 2. What do you think will happen? Explain why. Use the wording: “If….

The Level of Concentration Effecting the Reaction Rate Year 10 Chemistry Investigation Aim- To observe the effect of varying concentrations of hydrochloric acid, on the reaction rate. Hypothesis- If the concentration of hydrochloric acid is increased, then the reaction rate will also increase.

Also more testing could be done to fully understand the reasons behind the unpredictable variations in the higher concentrations, understanding this may shed more light on the limitations, both physically and chemically, of 2-chloro-2-methylpropane. The Hydrolysis of 2-chloro-2-methylpropane creates Hydrochloric acid, so through this process it may be possible to provide an alternate method of producing this type of acid, although the current method is most likely the more efficient. This experiment will always be able to amaze and create excitement about the many possibilities of chemistry, it also provides hands on learning about the processes involved within this particular hydrolysis as many fundamental chemical theories can be explained and understood through

Michaelis – Menten and Lineweaver – Burke kinetics of polyphenol oxidase . Effect of substrate concentration concentration on the rate of reaction”