The graph clearly shows how reaction rate of reaction increases when the concentration level is increased. Procedure a Measure 50 cm 3 of 1M hydrochloric acid using one of the measuring cylinders. Ensure that there are no naked flames. One error that may have caused a lower enthalpy of change value than expected could have been that heat escaped from the calorimeter used during the experiment. Reaction Between Hydrochloric Acid and Magnesium Introduction In the reaction between hydrochloric acid and magnesium, the hydrochloric acid will dissolve the magnesium and produce hydrogen gas. The other product or magnesium chloride is a compound that has an atomic weight of 95. Method When doing my experiments I will use the same procedure throughout.
We also predict that reaction of powdered Magnesium metal with highest concentration of hydrochloric acid will take the shortest duration of reaction. Middle I predict that the more concentrated the acid the faster the reaction will take place because the more concentrated the acid is the faster the magnesium will react and more hydrogen gas will be given off in a quicker time. Temperature influences the rates of reaction through kinetic energy, such that high temperatures increase the kinetic energy of reacting molecules therefore causing frequent collisions, which form products faster. The water level on the buret was recorded after production of gas ceased. This will reduce reaction errors related to impurities. Most healthy adults have about 25 g of magnesium in their body with about half of that in the bones. Corks are too porous and will leak.
Apparatus Measuring Cylinder: Conical Flask: Cork and a Bent Tube: Stand: Clamp: Ground Glass Syringe: Hydrochloric acid Hcl starting from 0. The aqueous vapor pressure was found using a chart. An average percent error of 0. Powdered solids produces rapid reactions than the same solids in single lumps. Rachel Moran started writing in 2003. These include the presence or absence of catalyst, temperature, concentration, and surface area of reactants. However mix it with other acids and nothing could happen or an even more violent reaction c … ould occur.
Swallow the tablets as directed on the package. If you wereto put another test tube over the one you have used to mixhydrochloric acid and magnesium you could catch the hydrogen andthen light it - this will then cause another che … mical reaction,which if done using large amounts could cause an explosion it willcreate a loud popping sound and a small burst if you use aboutone-third of a test tube of hydrochloric acid and two pieces ofmagnesium ribbon. The volume of hydrogen gas produced is measured over a few minutes, and the results are used to plot a graph. So as the magnesium was being carried from the measuring area to the workstation or while it was sitting on the counter top or being poured in, it could have reacted with the oxygen in the atmosphere and combusted. There are four main factors which affect the rate of reaction. Allow about 5 minutes for this demo. The chemical reaction between magnesium and hydrochloric acid produces magnesium chloride and hydrogen.
To find the pressure difference of water levels, I took the distance in difference of water levels, multiplied by the density of water, and divided by the density of Hg. It's also a great example of a single replacement reaction an oxidation-reduction reaction when discussing types of reactions. I have already stated this in my prediction had stated this in my prediction. The hydrochloric acid should be about 1M for a reasonable rate of reaction. If the acid is made more concentrated there are more particles, which means collisions are more likely. The possible ways are as follows: Amount of gas evolved I could use a gas syringe to collect the gas that will evolve from my experiment.
Illustration of a single displacement reaction. If you don't feel any relief after several rounds of trying, you might have too little hydrochloric acid. Introduction In the experiment the magnesium reacts with the hydrochloric acid to create magnesium chloride and hydrogen. Well it depends on the acid. When the two chemicals react a displacement reaction will take place and the magnesium will displace the hydrogen in the hydrochloric acid forming magnesium chloride and hydrogen gas.
The weight inconsistencies were small therefore, a low significance error Use at least two sets of experiment to get average of results to minimize the impact of experimental errors Determination of end of reaction was sometimes uncertain. Therefore, we sought to test the duration of reaction of equal lengths Magnesium ribbons with reducing concentrations of hydrochloric acid. Magnesium ribbon is a flammable solid. Most of them are fibrous, so reach for legumes, broccoli and lots of leafy greens. Retrieved March 8, 2012, from chemguide. Investigating Rate of Reaction Aim I am going to investigate the rate of reaction between calcium carbonate and hydrochloric acid.
Reactants with high surface area provide a greater binding surface for other reacting molecules, and therefore increase the number of successful collisions at any moment. Once again, the loss of heat would have resulted in a lower enthalpy value. However the acid is in excess, so it is mainly the loss of magnesium surface area becomes smaller that causes the change in the rate. There are many places in the curriculum where this demonstration could be used. My results are very good. One Method which would have given us more accurate results is as follows: Conclusion My results table and graph show me that when I increase the concentration of the hydrochloric acid, the initial rate of reaction also increases.
This type of chemical reaction often involves either hydrochloric or sulfuric acid, which are strong acids. Similarly, this is also a single replacement reaction in which the metal takes the place of another element in a compound. The magnesium ribbon should be clean and free from obvious corrosion or oxidation. It all depends on what exact compound you mix it with. Though low hazard, eye protection is necessary as you may get a spray as tiny bubbles burst. This is because magnesium is higher than hydrogen in the reactivity series.