Describe how you could investigate.
Marble chips and hydrochloric acid results.
Label this line a.
2 marks 9 4 explain in terms of particles how and why the rate of reaction changes during the reaction of calcium carbonate with hydrochloric acid.
With the equation caco3 2hcl cacl2 h2o co2 hypotheses a reaction occurs when particles collide.
This process is based on random particle movement.
The higher the concentration of hydrochloric acid in the beaker the faster the reaction will take place.
Therefore resulting in a quicker reaction.
Secondly weight out 3 grams of marble chips for each concentration 3.
The experiment involves using hydrochloric acid acidic and marble chip alkali.
We are going to put both reactants into a chonical flask and collect the gas that will be given off.
The rate of this reaction can be changed by changing the size of the marble chips.
These are reactions that transfer energy to the surroundings.
An investigation of the reaction between marble chips and hydrochloric acid.
This will allow us to see which reaction is faster with different strenghts of hydrochloric acid and also lets us compare results and draw realistic conclusions.
Using the apparatus shown the change in mass of carbon dioxide can be measure with time.
Pour the acid into the conical flask and add the marble chips 5.
This reaction between marble chips calcium carbonate and hydrochloric acid is an exothermic reaction.
As the marble chips react with the acid carbon dioxide is given off.
Calcium chloride solution is also formed.
9 3 sketch a line on the grid in figure 10 to show the results you would expect if the experiment was repeated using 20 g of smaller marble chips.
Investigating the rate of reaction between marble chips calcium carbonate and hydrochloric acid aim.
A stand to hold up the measuring cylinder.
Marble chips and hydrochloric acid planning aim to find if changing the concentration of an acid will increase or decrease the rate of the reaction when marble is dissolved in hydrochloric acid.
The energy is usually transferred as heat energy causing the reaction mixture and its surroundings to become hotter.
A tube to connect the conical flask to the measuring cylinder.
The variables that i shall be changing will be the concentration of hydrochloric acid and water.
A conical flask contains the marble chips hydrochloric acid and the water that will make the reaction.
This is because there will be more hydrochloric acid particles to collide with the marble chip particles.
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.
You then fill a bowl with water along with a boiling tube and straight after attach the delivery tube at the end of the boiling tube 4.
Marble chips calcium carbonate caco 3 react with hydrochloric acid hcl to produce carbon dioxide gas.
