An Investigation Into the Factors Affecting the Rate of the Reaction Between Calcium Carbonate and Hydrochloric Acid

After 15 minutes, the iron strip was corroded (its color was reddish brown), and the color of the solution slightly changed to green.

Three factors that can affect the rate of reaction are temperature, pH and the salinity.

To keep a fair test I will have to look into all the variables surrounding the experiment and only change the variable that I am testing on. The other variables are the temperature of the acid at the beginning, the volume of acid, the surface area of the magnesium strip, the length of the magnesium strip and if the magnesium strip is cleaned or not.

3. Please refer to the graphs at the beginning of the post-lab and question 2a. The effect of magnesium on a reaction rate depends on the magnesium’s shape and surface area, greater the surface area, the faster 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:

Investigating the rate of reaction between Marble Chips (Calcium Carbonate) and hydrochloric acid Aim. In the investigation I am going to find out how the surface area affects the rate of reaction by measuring the amount of gas produced and weight loss in a reaction between small/large pieces of Marble Chips (Calcium Carbonate) and Hydrochloric acid per minute. Hypothesis.

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 hydrochloric acid. I think that the results will go slower and slower the nearer they are to the 0.4 strength of hydrochloric acid. The reason that the experiment with hydrochloric acid at 2 molar will dissolve the magnesium ribbon faster is because it is of a stronger concentration and so the molecules in

According to my results, concentration does seem to have a large effect on the reaction rate as part C of the experiment with crushed marble chips in 20mL of 1.0M HCI had the slowest reaction over the same amount of time. At 15 seconds there was a mass loss of 0.08g, and at 360 seconds there was a mass loss of 0.40g. The first minute of part C the reaction rate was fast ,until it gradually started to get slower and slower until it stopped.

The purpose of this experiment is to investigate the effect of surface area on the chemical reaction between chalk and hydrochloric acid. An in-class experiment’s results are recorded and analysed after conducting 3 trials. The information gained through this is used to produce this report. The hypothesise that if the chalk is in its simplest powder form, then the reaction will occur faster than it would in its original or crushed forms.

The Effect of Concentration on the Reaction Time of Hydrochloric Acid and Sodium Thiosulphate Introduction The speed if which a chemical reaction occurs is known as the reaction rate. When chemical reactions occur they can either happen at a slow or fast rate depending on the chemicals. The concentration of the chemicals has the largest effect on the rate of reaction. Concentration, which is usually measured in mass volume per unit is referred to as the ratio of a substance.

In this investigation I am going to be investigating the reaction between marble chips and hydrochloric acid, and to see what differences in the rate of this reaction arise when different concentrations of acid are used. Below is the word equation for this reaction:

I am going to investigate the rate of reaction between calcium carbonate and hydrochloric acid. I will look at the various factors affecting the reaction and select one variable to change, while the others keep constant in order to carry out a deta... Investigating Rate of Reaction Aim I am going to investigate the rate of reaction between calcium carbonate and hydrochloric acid. I will look at the various factors affecting the reaction and select one variable to change, while the others keep constant in order to carry out a detailed investigation.

To keep this a fair test I have made sure that the acid used is the

To investigate the effect of temperature, concentration of reactant and particle size on the rate of reaction

Chemical kinetics studies and determines the rate or speed at which chemical or physical processes occur (Oliver,n.d.)(Jircitano, n.d.). The rate of reaction is the speed at which the reactant in a reaction transforms into products or the change in concentration of a chemical species over the time taken for that change to occur (Oliver,n.d.)(Jircitano, n.d.)(Mack, n.d.)(Blackburn,n.d.). Chemical reactions occur at many different rates and in aqueous or equilibrium systems this rate is dependent on the variables such as the reactivity of reagents, initial concentrations, temperature induced fluctuations and any means of catalysis. (Oliver,n.d.)(Jircitano, n.d.)(Blackburn,n.d.).