The acid particle bounces away again. Overall, I believe that I have enough evidence to support my conclusion, however different equipment and more data would give me a more confident and precise conclusion. Prediction: I predict that the heating the hydrochloric acid will effect it as heating is one… 1541 Words 7 Pages Introduction In this chemical reaction, the magnesium will dissolve in the hydrochloric acid to produce hydrogen gas. Temperature ----------- The higher the temperature of the solution, the faster the rate of reaction, and vice versa. It could have been cut from a different strip of ribbon, which could alter the weight of it. Ratio of acid:water Experiment 1 2 3 10:0 0.
Results Here is a table containing the times I recorded, they are in minutes and rounded to 2 decimal places. One person should read the results at eye level to the tube, so they can get an accurate reading, and another person should note down the times whereas one keeps there eye on the time. This should increase the reaction rate. If I was to choose the temperature of the acid as my independent variable, and if I were to heat the acid too much it may boil and produce a corrosive gas, which would life threatening. This result had much larger ranges than other experiments.
It is clear that not all collisions are effective. Throughout the experiment, we diluted the acid solution using water, as we did this the concentration of the acid decreased. A speed on which the reaction takes place is called and rate of reaction. This process is based on random particle movement. I will add calcium carbonate marble chips to hydrochloric acid. I would have to measure the amount of hydrogen produced in regular intervals which would change for each concentration. We placed the different size chips and the acid in two measuring cylinders and placed them on weighing scales.
Introduction In acid-base chemical reactions, there are four main variables, which influence the rate of reaction. The products that will be formed are Magnesium Chloride MgCl2 and Hydrogen H2. Background Knowledge There are four factors that can affect the rate of reaction and they all rely on the collision theory. The higher the concentration of acid the faster the rate of reaction will be, and vice verse. A chemical reaction is defined as the process that involves rearrangement of the ionic structure of a substance.
We also predict that reaction of powdered Magnesium metal with highest concentration of hydrochloric acid will take the shortest duration of reaction. I believe that concentration affected the rate of reaction in this way as explained in collision theory. When carrying out the experiment, be sure to wear safety goggles as we are working with acid. In many places, limestone is also the foundation of our Earth—literally, since it is forms both bedrock and mountain ranges. Our preliminary experiments helped us decide several things about our method.
The results form a curv which also proves that the results are reliable. There are four main factors which affect the rate of reaction. This can be justified by relating to the Collision theory, which is that '. Photosynthesis is a process plants undergo that uses water and carbon dioxide gas in the presence of light energy to produce glucose and oxygen gas. Measure out 10ml of the selected concentration of sodium thiosulphate; prepare the stopwatch and start it as the sodium thiosulphate is added to the hydrochloric acid. Therefore making the reaction accelerate.
Imagine a celebrity between simplicity binding and a concise acid like hydrochloric acid. An audible crackling sound is heard as the hydrogen burns. Also, a key difference is that carbon dioxide dissolves in water, meaning that not all of the carbon dioxide was measured, as some would have been lost in the water. I reach the conclusion as the 100% Hydrochloric Acid solution produced 50cm3 Carbon Dioxide almost 7 times faster than the 20% solution. In order to provide additional evidence and extend my investigation to find out more and back up my conclusion I could perhaps repeat the experiment using specialist equipment. Therefore, when the two reactants are combined, a displacement reaction occus and the magnesium displaces the hydrogen, forming magnesium chloride and hydrogen gas. I do this experiment ten times, each time heating the sodium thiosulphate 5°C hotter each time.
To back this prediction up I have to look at the collision theory, this states that for the two different reactants to react the particles Middle In experiment A the reaction is over after 60 seconds this was doubled in experiment B proving my theory that when the concentration is doubled the reaction time is also doubled. Sulphur forms a colloidal precipitate which gives the solution a cloudy yellow appearance. I will be doing this coursework for a period of two weeks. The theory also follows the same rule for average rate, as in experiment A the average rate per second is 1cm3 where as the rate for experiment B Is 0. The effect of temperature on a reaction rate In this experiment I shall be investigating how temperature affects the rate of reaction Rates of reaction The Factors that affect the rate of reaction are temperature, surface area, concentration, catalysts, light and pressure Surface area — Surface area is the amount of solid surface that is available for reaction - Only affects solids so this will not affect our experiment - When the surface area increases the rate of reaction increases as there is more surface area for the particles to work on, thus, there are more collisions per second - Example : It is easier to light a fire with small pieces of stick than using large blocks of wood Concentration - Concentration is the amount of molecules of a substance in a given volume - Concentration affects solids, gases and liquid so this will affect our experiment - When the concentration increases the rate of. Chemical reactions can be very difficult to undo. The acid may have also been older, again reducing its reactivity, so I would use new acid.
Jargon and Fraudulent Acid - Restrained by Women. Another aspect which may have limited my conclusion is the range of data I obtained. Resistance is measured in ohms. As the reaction takes place, the solution becomes cloudy and the cross gradually disappears. If there is anything that I did wrong in the math, please tell me. Chemical reactions between substances are caused by the collision of particles.