In this reaction, the magnesium and acid are gradually used up. Chemistry for higher tier: Concentration of HCl M 3. Ensure that all naked flames are extinguished, and that there are no other sources of ignition available to students. Get more free essays Which categories were useful to you? Clark explains that, finely divided chemical solids have greater surface area than chemical solids in lumps.
Powdered Magnesium metal will reduce the reaction duration by a half if used in place of equivalent length of magnesium ribbon, when reacted with hydrochloric acid. Clark explains that, finely divided chemical solids have greater surface area than chemical solids in lumps. High concentrations imply that more reacting molecules are at high proximity to each other therefore intermolecular collisions are frequent therefore forming products frequently. Repeat step 5 and 6 for 2M, 1. The magnesium ribbon should be clean and free from obvious corrosion or oxidation. The tube through the bung should be a short section of glass, and then a flexible rubber tube can be connected. Eye protection Each group of students will need:
Cut 5 equal sizes 10 cm pieces of Magnesium from the fleshly cleaned Magnesium ribbon, weigh each of them using a digital weighing balance and record their weights. If magnesium ribbon is replaced with an equivalent weight of powered magnesium, does the rate of reaction between magnesium and hydrochloric acid double?
The experiment procedure was divided into two related investigations involving equal lengths of Magnesium ribbons and equal amounts of powdered Magnesium metal.
In addition, impurities may form on the surface of the magnesium metal therefore, slowing further the rate of reaction. Choose only one indicator that magndsium end of reaction.
Eye protection Each group of students will need: Make sure you put on your personal protective clothing and safety goggles. Surface area of Magnesium ribbon: High concentrations imply that more reacting molecules are at high proximity to each other therefore intermolecular collisions are frequent therefore forming products hyrdochloric.
Rate of Reaction of Magnesium and Hydrochloric Acid
Half fill the trough or bowl with water. Calculations Cumulative average of reaction duration of: This shows that the reaction is fastest at the start.
Rate-reaction trends of magnesium metal ribbon and powder with increasing concentration of HCl Calculations Cumulative average of reaction duration of: Discard all the chemicals, wash, and rinse the conical flasks ready for another procedure.
Description Magnesium reacts with dilute hydrochloric acid in a conical flask which is connected to an inverted measuring cylinder in a trough of water.
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, magnesiumm sought to test the duration of reaction reacion equal hyvrochloric Magnesium ribbons with reducing concentrations of hydrochloric acid.
The concentration of hydrochloric acid used and the surface area of the Magnesium metal used. Repeat steps 5, 6 and 7 above. Therefore, the errors were unidirectional therefore consistent.
During the experiment, one student can take the readings while the other records them.
The rate of reaction of magnesium with hydrochloric acid
Importantly, suitable acid-base indicators can be used to detect the end of the reaction accurately. This brought a slight confusion in stopwatch reading. Data Evaluation The experimentation procedures followed were standard for all the two sets of experiments conducted, including data collection mode. Surface Area and Rate of Reaction. This resource image was supplied by science photo library https: Study Variables The Dependent Variables: The weight inconsistencies were small therefore, a low significance error.
A reaction between Hydrochloric Acid and Magnesium ribbon. – GCSE Science – Marked by
The aim of this experiment is to verify the effects of surface area of solid reactants and concentration of aqueous reactants on the rates of acid-base chemical reactions. This will be changed by changing dilution factor.
Clear your working bench. Experimental set-up of HCl-Magnesium reaction Results and Observations During the reaction, the water bath in the gas delivery system showed gas bubbles ascending to the gas cylinder.
The rate of reaction of magnesium with hydrochloric acid- Learn Chemistry
We also predict that reaction of powdered Magnesium metal with highest concentration of hydrochloric acid will take the shortest duration of reaction. Solids, liquids and gases. 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. Therefore, this study intends to investigate the effect of concentration and surface area of reactants on the rate of chemical reactions.