An Investigation to see How the Concentration of Hydrochloric acid
affects the Rate of Reaction with Calcium Carbonate
I am going to investigate how concentration of hydrochloric acid
affects the rate of reaction between hydrochloric acid and indigestion
tablets which contain mainly calcium carbonate.
From my background knowledge from class work and books, (see
references) I have found out that if you increase the concentration of
hydrochloric acid, the rate of reaction will increase and the time of
the reaction will decrease. The concentration is dependant on the
proportions of hydrochloric acid and water in the solution. The
stronger the hydrochloric acid is, the higher the concentration is.
I know from my research that other things can affect the rate of
reaction, for example:
Temperature of acid- the higher the temperature of the acid is, the
more energy the particles have to move around, therefore there are
more collisions and so a faster rate of reaction. There is a certain
amount of energy needed for the particles to react which is called the
activation energy, so when the temperature of the solution is higher,
it gives more particles sufficient energy so they move faster to react
when they collide more.
Size of the particles- when the reactant is a solid then it can be
broken down into smaller pieces or into a powder giving it different
surface areas. The smaller the pieces, the bigger the surface area is
and therefore there is more area for the acid to react with it, and so
there is more chance of the particles colliding, so the rate of
reaction will increase.
Catalysts- this weakens the bonds in the reacting molecules so it
seems to lower the activation energy for the reaction. This means that
there can be many more successful collisions because particles will
have more energy than the activation energy, and so the reaction will
be faster.
In order to keep my experiment fair, I must keep all the variables the
same except concentration, which is what I am investigating.
From my preliminarty experiments, I have found that a gas is let off
in this reaction and having testing by putting it with lime water, I
have concluded that the gas is carbon dioxide because the lime water
turned cloudy.
The equation is:
Calcium Carbonate + Hydrochloric acid Calcium Chloride + water
+ carbon dioxide
To find the rate of reaction, I will measure how long it takes to
produce a certain amount of gas. To work out the rate of reaction, I
have to divide the amount of gas I will collect with the time.
Rate= amount of gas collected/ time
In order to make this experiment fair, I will keep all the variables
the acid was at 14 C the magnesium took 141 seconds to react and 27 C
The more concentration or more volume there is of an acid, the more acid. molecules there are that can react with the chalk. The larger the surface area of a solid, the more surface there is for acid to collide. with and react with. Higher pressure pushes the molecules closer.
limestone chips, I will use 3g all the time and use 2 moles of acid.
The reason I believe this is that chemical reactions occur when particles of the reacting substances collide. Increasing the number of the particles increases the number of collisions per second and this increases the reaction rate. In the reaction between hydrochloric acid and calcium carbonate you can increase the number of particles in two ways. The first of these is to increase the surface area of the calcium carbonate.
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 of Hydrochloric Acid on the Rate of Reaction Between Hydrochloric Acid and Magnesium
Effect of Temperature on the Rate of Reaction between Sodium Thiosulphate and Hydrochloric Acid Investigation Chemical reactions are used in our everyday life, they literally keep us alive. They are used in food, respiration and everywhere else in the environment. A chemical reaction mainly occurs when reactants react together to produce a new product. The speed at which this reaction takes place is called the rate of reaction. The product produced has a number of particles in the solution that has formed from the reactants.
The Effect of Changing Concentration of Hydrochloric Acid on Its Reaction with Carbon Dioxide. Plan Carbonates, including all forms of limestone, react with hydrochloric. acid to produce Carbon Dioxide. Calcium â”14 Hydrochloric â’ Calcium â”14 Water â”14 Carbon. Carbonate Acid Chloride Dioxide I'm going to experiment with changing the concentration of the hydrochloric acid in this reaction and seeing how it affects the amount of Carbon Dioxide that is produced.
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.
from 10cm to 50cm to make it easier to see the difference in a graph.
The Effect of Concentration of Hydrochloric Acid on the Rate of Reaction with Magnesium Aim: To investigate the effect of concentration of hydrochloric acid on the rate of reaction with magnesium Prediction: As the concentration of the hydrochloric acid increases, so will the rate of reaction Hypothesis: In a reaction, particles of two different reactants react together to form a product. The reaction only takes place on account of two things, if the particles collide, and if the collision has enough 'activation energy'. The two reactant particles, in this case magnesium particles and hydrochloric acid particles, must collide with each other on the correct 'collision course'. If this does not occur then no chemical reaction will take place. The reaction must also have enough energy, this can be affected by temperature, the more heat the particles have the faster they move and so the more energy therefore more chance of successful collisions.
Investigating the Effects of Temperature on the Rate of Reaction between Magnesium and Hydrochloric Acid
The Effect of Temperature on the Rate of Reaction Between Hydrochloric Acid and Calcium Carbonate
An investigation into how changing one variable influences the rate of reaction between marble chips and dilute Hydrochloric acid
We have no gases and solids involved, therefore it is easy to deal with solutions. Similarly, the use of a catalyst complicates things, and if used incorrectly could alter the outcome of the experiment. The theory behind this experiment is that increasing the concentration can increase the rate of the reaction by increasing the rate of molecular collisions. GRAPH I will place the reaction mixture on a paper with a black cross drawn on it. When the cross is completely obscured, the reaction will be finished.