Investigating the Rate of Reaction Between Marble Chips and Acid
Introduction
This is a test to demonstrate the reaction rate between marble chips
(CaCO) and hydrochloric acid (HCl). Hopefully we will be able to prove
that the concentration of the acid is directly proportional to the
reaction rate.
Aim
To discover if the concentration of acid is directly proportional to
the rate of reaction, by monitoring the amount of gas given off as the
reaction takes place.
Prediction
We believe that the concentration of the acid will be directly
proportional to the rate of reaction. We believe this due to the
following theory:
[IMAGE]The collision theory: This theory states that for a reaction to
occur the reactant particles need to react with sufficient energy.
This is called Activation energy. This is shown in the below diagram:
[IMAGE]
[IMAGE]
[IMAGE]
[IMAGE]
[IMAGE]
[IMAGE]
energy activation energy
[IMAGE]
[IMAGE]
[IMAGE]
[IMAGE]
[IMAGE]
reactants
[IMAGE] products
[IMAGE] time
Anything that aids a reaction would have to either give the particles
energy or use a catalyst to decrease the amount of energy needed to
react.
The more reactant particles there are (or the stronger the
concentration) the harder the reaction will occur.
Using the above theory, I predict that the higher molar the acid is,
the more CO2 will be given off. I predict that the following reaction
will occur:
[IMAGE]CaCO3(s) + 2HCl(aq) CaCl2(aq) + H2O + CO2(g)
I also predict that after a certain amount time all the reactants will
run out and only the product will be left, only then will the reaction
end.
Variables
A variable is anything which affects the results of an experiment, for
example, the variable could affect the speed the particles move or the
amount of energy needed in a reaction. For this experiment, there are
many variables we could use.
Abstract: This week we experimentally determined the rate constant k for the reaction 2HCl (aq) +Na2S2O3 (aq) → S (s) + SO2 (aq) + H2O (l) + 2NaCl (aq). In order to do this the average reaction time was recorded in seconds during two trials. The data from the experiment shows this reaction is in the first order overall: rate=.47s-1 [HCl]0 [Na2S2O3]1. These findings seem to be consistent with the expected results
Investigation of the reaction between hydrochloric acid and marble chips A chemical reaction is when two or more substance called reactants are chemically bonded to form a new product, as a result of the process, for a reaction to take place, the particles must have enough kinetic energy to collide and form new bonds , this is called a successful collision. The minimum amount of energy needed for a successful collision is activation energy, which is “The energy that an atomic system must acquire before a process can occur”. Chemical reaction is different to a physical reaction, chemical reaction are not reversible and results in a new product, however a physical reaction can be easily reversed as it only changed its state. The activation energy is able to loosen particles and enable them to from new bonds to produce new products. The faster the molecules are moving the bigger the chance of a successful collision, so the faster and stronger the reaction will be , the more kinetic energy a reactant has the easier it is for the new bonds the collide and produce new bonds.
Investigating Factors Which Affect The Reaction Between Chalk and An Acid. Introduction: Chalk is just one of the many forms that calcium carbonate can take. It is made of the mineral remains of sea creatures from millions of years. ago.
limestone chips, I will use 3g all the time and use 2 moles of acid.
It will be when there is too much HCl for the marble chips to dissolve
Experiment is to investigate the rate of reaction between hydrochloric acid and calcium carbonate Hydrochloric acid + Calcium Carbonate Þ Calcium Chloride + Water + Carbon Dioxide 2HCl (aq) CaCo3 (s) CaCl2(s) H2O (aq) CO2 (g) There are a number of variables in this experiment and these are listed below as input variables and outcome variables.
because it is the easiest to do! All the rest I will have to keep the
The purpose of the experiment is to study the rate of reaction through varying of concentrations of a catalyst or temperatures with a constant pH, and through the data obtained the rate law, constants, and activation energies can be experimentally determined. The rate law determines how the speed of a reaction occurs thus allowing the study of the overall mechanism formation in reactions. In the general form of the rate law it is A + B C or r=k[A]x[B]y. The rate of reaction can be affected by the concentration such as A and B in the previous equation, order of reactions, and the rate constant with each species in an overall chemical reaction. As a result, the rate law must be determined experimentally. In general, in a multi-step reac...
An investigation into how changing one variable influences the rate of reaction between marble chips and dilute Hydrochloric acid
The Rate of Reaction Between Calcium Carbonate and Hydrochloric Acid Planning. CaCO3 (s) + 2HCl (aq) ---- CaCl2 (aq) + H2O (l) + CO2 The rate of reaction depends on how hard and how often the reacting particles collide with each other. A rate of reaction is how fast a reaction takes place.
Rate of Reaction Between Calcium Carbonate and Hydrochloric Acid Plan: In my experiment I will measure the rate of reaction between calcium carbonate and hydrochloric acid. The rate of the reaction is the speed that the reaction takes place so by measuring the rate I will measure the amount of time the reaction takes. Hydrochloric acid is a strong acid that is found in digestive juices in the stomach, it is also used for cleaning metals before they are coated. 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 such as buildings. When you put calcium carbonate and hydrochloric acid together they react to form calcium chloride, carbon dioxide and water.
Rate of Reaction Between Marble Chips and Hydrochloric Acid. The aim of this experiment is to find out how different variables affect the rate at which the reaction between Marble chips (CaCO ) and Hydrochloric acid (HCl) is used. There are many variables that affect the rate of this reaction such as the following. 1.
The Effect of Temperature on the Rate of Reaction Between Hydrochloric Acid and Calcium Carbonate
I will weigh out one gram of marble chips using a balance and put it
Looking at the table of results above and the graph, it is shown that the higher the temperature got, the shorter the reaction time. The obtained results have been plotted on a line graph of the temperature of hydrochloric acid (y-axis) against reaction time (x-axis). This line graph in fig.2 also clearly shows that as the temperature increases, so does the speed of the reaction, shown by a reduction in the time taken. This corroborates the collision theory, where as the temperature of particles increase, the particles gain more kinetic energy and react with each other upon collision. This is shown as to happen in the hydrochloric acid, where the hydrochloric acid particles collide more with the particles of the magnesium ribbon as the temperature was increased. The above graph shows a gradual sloping curve, which gets steeper at higher temperatures. This shows that the reaction will reach a peak rate of activity as the gaps between the temperature and reaction times continue to decrease. The experiment fulfills the aim and clearly shows that as the temperature of a reaction is increased so does it’s rate of reaction, proving the hypothesis to be correct.