The Effect of Acid on the Rate of Reaction with Magnesium
Aim:
To find out how the concentration of hydrochloric acid affects the
rate of reaction with magnesium ribbon.
Hypothesis:
I think that the lower the concentration of Hydrochloric acid, the
slower the rate of reaction with Magnesium ribbon. The reason why is
because there are less particles in the same volume so less collisions
are possible every second, therefore less effective collisions will
occur.
Preliminary work:
I did an experiment before to find out how the concentration of
hydrochloric acid affects the rate of reaction with Sodium
Thiosulphate.
Preliminary work backs up this hypothesis. Because, when doing the
practical previously, I found out that the rate of reaction between
Sodium Thiosulphate and Hydrochloric acid depends on the amount of
concentration, which becomes faster with a higher volume of
concentration.
[IMAGE]Mg + 2HCL MgCl2 + H2
This equation shows the reaction that will occur
Apparatus:
Magnesium ribbon
2M Hydrochloric acid
Distilled water
Stop clock
Conical flask
Delivery tube
Measuring cylinder
Measurements:
Here are the measurements of the hydrochloric acid and the magnesium
ribbon, which I am going to use in the experiment.
Hydrochloric acid
1. 50cm³ of hydrochloric acid
2. 40cm³ of hydrochloric acid
3. 30cm³ of hydrochloric acid
4. 20cm³ of hydrochloric acid
5. 10cm³ of hydrochloric acid
Water
1. 0cm³ of water
2. 10cm³ of water
3. 20cm³ of water
4. 30cm³ of water
5. 40cm³ of water
Magnesium Ribbon
1. 2cm magnesium ribbon
2. 2cm magnesium ribbon
3. 2cm magnesium ribbon
4. 2cm magnesium ribbon
5. 2cm magnesium ribbon
Method:
* Collect and set up apparatus shown in diagram
Investigating the Effect of Concentration on the Rate of Diffusion Aim: To find out if concentration affects the rate of diffusion. Prediction: I predict that the higher the concentration of acid the faster the reaction will be. Hypothesis: Diffusion is the spreading out of a gas or liquid from an area of low concentration to another area where it has a lower concentration until the overall concentrations are balanced. The Hydrochloric acid (HCl) diffuses into the gelatine cube of which contains Sodium Hydroxide (NaOH), which is an alkali. When the Hydrochloric acid combines with the Sodium Hydroxide they form salt and water, which is neutral therefore turning the pink cube to clear.
Investigating How the Concentration of Hydrochloric Acid Affects the Rate of Reaction with Calcium Carbonate
3. Add on of the following volumes of distilled water to the test tube, as assigned by your teacher: 10.0mL, 15.0mL, 20.0mL, 25.0mL, 30.0mL. (If you use a graduated cylinder, remember to read the volume from the bottom of the water meniscus. You can make more a more accurate volume measurement using either a pipette or a burette.)
It is important however to note that the NH4 and K ions are still in
Investigating the Factors Influencing the Rate of Reaction Between Sodium Thiosulphate and Dilute Hydrochloric Acid
The Effect of Temperature on the Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid
The Effect of Temperature of Hydrochloric Acid on the Rate of Reaction Between Hydrochloric Acid and Magnesium
The Effect of Sodium Thiosulphate Solution on the Rate of its Reaction with Hydrochloric Acid
· When I have collected my results I will place them in a table like
9. When all magnesium has reacted, remove the lid and heat strongly for 5 minutes
2. In the large beaker, put water and boil it completely. After that, remove the beaker from heat. 3. Sample tubes (A-D) should be labeled and capped tightly.
If there is not enough energy no reaction takes place. In a solution of 0.5M hydrochloric acid, there are less hydrochloric acid particles compared to that of 2M hydrochloric acid, therefore, there are less particles to react with magnesium particles thus meaning less chance of collisions between the two reactants: [IMAGE] Therefore, as the concentration of the hydrochloric acid is increased, the chances of collisions increase thus giving a faster rate of reaction. Apparatus: Beaker Hydrochloric acid Distilled water Measuring cylinder Pipette Test tubes Test tube rack Diagram: [IMAGE] Method: Measure out 10cm3 of hydrochloric acid, as the concentration requires, for each concentration its composition is: Moles Volume HCl Volume Water 2M 10 cm³ 0 cm³ 1.5M 7.5 cm³ 2.5 cm³ 1M 5 cm³ 5 cm³ 0.5M 2.5 cm³ 7.5 cm³ 0M 0 cm³
Controlled variables: Using the same quantity of magnesium and the same concentration of hydrochloric acid. Aim and Purpose The aim and purpose of this experiment is to investigate if the temperature of HCL will affect the rate of reaction between HCL and magnesium. Research Question How does the temperature of hydrochloric acid affect the rate of reaction it has with magnesium? Hypothesis As the temperature of the hydrochloric acid increases, so will the rate of the reaction.
* Concentration - I will try my best to use all the acid from the
The temperature at which the reaction is carried out Use of a catalyst Reaction equation is mentioned above but rate equation can only be decided by doing experiments. So, the following procedure can be used to carry out the experiment. Plan Equipment 2 Measuring cylinders Beaker Stopwatch Paper with black cross on it Sodium Thiosulphate (different concentrations) Hydrochloric acid (same concentration each time) Water (different concentrations) Pipette. Prediction I predict that the greater the concentration of sodium thiosulphate solution, the faster the chemical reaction will take place.