At the same time another person will start the timer. To make my experiment accurate I am repeating the experiment three times, I am measuring the gas carefully throughout the experiment and I am measuring the calcium carbonate carefully on highly responsive scales. Finally, I am measuring the amount of hydrochloric acid very carefully and accurately. The molarity of the concentration of Hydrochloric Acid -Dependant:
Variable Factors The factors that could slow down or speed up this reaction are: The hotter the materials, the faster the reaction and vice-versa.
Prediction From previous experiments I have learned that if large pieces are broken into smaller pieces they react faster because they have more surface area.
This is because at the molecular level, there are more molecules at the surface of the chips for the molecules of acid to react with when the chips are broken into smaller pieces.
The same principle can be applied to the marble chips.
Hydrochloric acid is found naturally in gastric acid. Calcium carbonate is a chemical compound with the formula CaCO3. It is a common substance found in rocks in all parts of the world, and is the main component of shells of marine organisms, snails, coal balls, pearls, and eggshells. * Hydrochloric acid – To react with the calcium carbonate. * Bung – To allow the carbon dioxide gas to pass along to the gas burette. * Conical flask – Where the reaction between the marble chips and hydrochloric acid will take place. Hydrochloric Acid and Calcium Carbonate Essay Sample. For our coursework investigation we tested how concentration affected the rate of reaction between calcium carbonate and hydrochloric acid.
The smaller the chips the more surface area so I predict that the smaller marble chips will react faster than the larger chips. Method Here is the set up: In this experiment I will be keeping the variables I mentioned earlier the same except one to keep the experiment fair.
I will be changing the size of the marble chips to see which size reacts the fastest. The gas syringe is firstly clamped to the stand and a plastic tube and bung are attached to the syringe.
The marble chips are then measured out I will be using 2g of marble chips each time and the hydrochloric acid 10ml is added to the flask.
The chips are then added and the bung is quickly placed over the flask to create an airtight seal. The amount of carbon dioxide in the gas syringe is read off every 10 seconds until the reaction stops or the gas syringe runs out of capacity ml.
Risk Assessment Goggles must be worn at all times to prevent acid going in eyes.
Gas syringes must be handled with care to prevent accidents Variables Table Dependant Variable Value How Measured Amount of carbon dioxide collected Amount read every 10 seconds. Size measured by third party. Weighed using digital scales. Control Variables Amount of acid 10ml each time Measuring Cylinder Concentration of acid 1 molar acid Measured by third party.investigate the rate of reaction between Calcium Carbonate and Hydrochloric Acid.
Just from looking at the aim of the investigation I already know that a salt would . Hydrochloric Acid and Calcium Carbonate Essay Sample. For our coursework investigation we tested how concentration affected the rate of reaction between calcium carbonate and hydrochloric acid.
An Investigation Into the Factors Affecting the Rate of the Reaction Between Calcium Carbonate and Hydrochloric Acid Essay Investigation into the Factors Affecting the Rate of the Reaction between Calcium Carbonate and Hydrochloric Acid A chemical reaction is the process by which atoms or groups of atoms are redistributed, resulting in a.
If you have a two fixed masses of hydrochloric acid, which have both been crushed up, the one with the smaller particles will have a higher rate of reaction, due to the fact that there is a higher surface area exposed to the hydrochloric acid. Research Question: How does temperature affect the rate of chemical reaction between Calcium Carbonate and Hydrochloric Acid?
Hypothesis: If temperature increases then the rate of reaction between the reactants will increase because the molecules will gain more kinetic energy and make it ea.
Molecule of hydrochloric acid [Wikimedia] HCl is a strong monobasic acid, which is obtained in the dissolution of hydrogen chloride in water. It is a colorless liquid, although industrial acid can have a yellow tint, for example from a mixture of iron.