Tuesday, May 28, 2019
Experiment to investigate factors affecting the rate of reaction betwee
Experiment to enquire factors affecting the rate of reaction between magnesium palm and hydrochloric acidRates of Reaction InvestigationExperiment to investigate factors affecting the rate of reactionbetween magnesium ribbon and hydrochloric acid.Chemical reactions between substances are ca exercised by the collision ofparticles. More collisions mean a faster rate of reaction.In the reaction between hydrochloric acid and magnesium ribbon, thechemical reaction takes place when the magnesium ribbon is droppedinto the hydrochloric acid. The products are hydrogen gas andmagnesium chloride.The equation for this reaction is as follows-Magnesium + Hydrochloric acid Magnesium chloride + HydrogenMg (s) + 2HCL (aq) MgCl2 (aq) + H2 (g)Factors that affect the rate of reaction-* Temperature* Mass of magnesium ribbon* immersion of hydrochloric acid* Surface area of magnesium ribbonI have chosen to use the concentration of hydrochloric acid as myindependent variable. These different concentr ations sewer be variedeasily and made up accurately for the experiment.Each experiment will be done four times so that an middling reading canbe calculated - ensuring an accurate and reliable conclusion. Themeasured variable will be the time taken for the same quantity ofmagnesium ribbon in each experiment to be used up in reaction. Theconstant variable will be the length of the magnesium ribbon used ineach experiment.Rate of reaction = Gradient of the line of a graph plotted with timetaken to cease reacting againstconcentration.Concentration of a solution describes the number of active particlesin a particular volume.The unit of concentration is mol.dm-3PredictionI predict that the higher the concentra... ...ing aroundfaster. This would mean HCL and magnesium particles would collide morefrequently, thereby increasing rate of reaction.I think that my results on graph 1 were suitable to draw an accuratebest-fit line. The points are each(prenominal) joined by the line.I used 5 dif ferent concentrations which were in a suitably wide range.If I were to repeat the experiment I would use a slightly wider rangeof concentrations to expand my conclusion, such as 1.25M, 0.75M and0.25M. If the resources were available, I would also extend the rangeto higher concentrations than the 2M I was restricted to in thisinvestigation. get ahead investigation could also include using another factor as myindependent variable.I could differ the surface area of magnesium in my experiments, and stop how this affects rate of reaction in what way and if there is adefinite proportional relationship.
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