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
It is important however to note that the NH4 and K ions are still in
9. When all magnesium has reacted, remove the lid and heat strongly for 5 minutes
Apparatus: * 1 measuring cylinder * 1 test tube * 1 stop clock * A large gelatine cube containing indicator and NaOH * Hydrochloric acid ranging from 1-3 molars * A scalpel Diagram: Method: * Take the large gelatine cube and cut into 15 equal pieces * Place on piece of the cube into the test tube * Measure out 10mls of HCl in the measuring cylinder * Pour the HCl into the test tube with the gelatine cube and start the clock * Time how long it takes for the pink colour inside the gelatine cube to completely disappear * You will also notice that the cube dissolves slightly * Record your results and repeat this same process 3 times for each molar of acid: § 1 molar § 1.5 molar § 2 molar
The Effect of Temperature of Hydrochloric Acid on the Rate of Reaction Between Hydrochloric Acid and Magnesium
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.)
the chances of collisions increase thus giving a faster rate of reaction. Then the s Apparatus:. Beaker Hydrochloric acid Distilled water Measuring cylinder Pipette Test tubes Test tube rack Diagram:.. [ IMAGE] Method: The.. Measure out 10cm3 of hydrochloric acid, as the concentration requires. for each concentration its composition is.
Investigating the Factors Influencing the Rate of Reaction Between Sodium Thiosulphate and Dilute Hydrochloric Acid
* Concentration - I will try my best to use all the acid from the
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.
The Effect of Sodium Thiosulphate Solution on the Rate of its Reaction with Hydrochloric Acid
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.
· When I have collected my results I will place them in a table like
Looking at the table of results above and the graph, it is shown that the higher the temperature got, the shorter the reaction time. The obtained results have been plotted on a line graph of the temperature of hydrochloric acid (y-axis) against reaction time (x-axis). This line graph in fig.2 also clearly shows that as the temperature increases, so does the speed of the reaction, shown by a reduction in the time taken. This corroborates the collision theory, where as the temperature of particles increase, the particles gain more kinetic energy and react with each other upon collision. This is shown as to happen in the hydrochloric acid, where the hydrochloric acid particles collide more with the particles of the magnesium ribbon as the temperature was increased. The above graph shows a gradual sloping curve, which gets steeper at higher temperatures. This shows that the reaction will reach a peak rate of activity as the gaps between the temperature and reaction times continue to decrease. The experiment fulfills the aim and clearly shows that as the temperature of a reaction is increased so does it’s rate of reaction, proving the hypothesis to be correct.
ranging from 50 cm³ of acid and no water, to 12.5 cm³ of acid and 37.5
The Effect of Temperature on the Rate of Reaction Between Sodium Thiosulphate and Hydrochloric Acid