Saturday, June 1, 2019

the rate of reaction between calcium carbonate and hydrochloric acid Es

I am going to investigate the rate of reaction between calcium carbonate and hydrochloric acid. I leave look at the mixed factors affecting the reaction and select one variable to change, while the others keep constant in order to carry out a deta...Investigating lay of ReactionAimI am going to investigate the rate of reaction between calciumcarbonate and hydrochloric acid. I will look at the various factorsaffecting the reaction and select one variable to change, while theothers keep constant in order to carry out a exact investigation.Formulae========The formula for the chemical reaction is=========================================CaCO3(s) + 2HCC(l) CaCl2 (aq) + H2O(l) + CO2============================================I can measure the rate of reaction between the two substances utilisethis formula.Rate of Reaction = channelise in Concentration------------------------------------------Time Taken for ReactionA chemical reaction is the name given to a substance when it changesand becomes a completely cutting substance. It is difficult to reverse. Ithappens when particles make effective collisions with sufficientenergy.Apparatus=========Spatula-------Conical Flask-------------BuretteStand + ClampsMeasuring CylinderSafety GogglesBeakerThermometerStopwatch eardrum + waterSmall FunnelDelivery Tube + BungI have chosen to lend oneself a measuring cylinder to make my test asaccurate as I possibly can. I will be wearing the provided safetygoggles at all times to hold dear my eyes, as hydrochloric acid is anirritant that may prove dangerous if it makes contact with the eyes.TheoryThe following theories will help me decide which variable I willchange in my experiment to investigate the rate of reaction usingcalcium carbonate and hydrochloric acid.Temperature - Collision Theory==============================The diagram shows particles that are not contemptible quickly. This means that the chance of these particles colliding and causing a chemical reaction is rather low. The temperature is obviously low too, as the particles have little energy to move quickly. However, if heating system were added, the particles would have more energy and move quicker and have a better chance of colliding.This diagram shows particles that are moving quickly. This means... ...respond with my prediction and back it up. As the temperatureincreases, so does the rate of reaction.If I were to repeat the experiment again, I would work under strictenvironment, such as in a closed board with no winds or temperaturechanges. I would also try and utilise more accurate ways of reading thetemperature and keeping the temperature constant, such as by using awater bath. Doing this would possibly make my results even moreaccurate. I would also try and make my timing even stricter, possiblyusing a smaller time interval such as 10 seconds instead of 15, to getslightly more accurate results. I may also use a larger range ofacids. I only tried the 1 molar acid, but if I were to repeat theexperiment again, I would perhaps use 3 and 4 molar acids and testthem under high temperatures. I would like to investigate in futurethe effect of catalysts and surface area on the rate of reaction, tobe more conclusive on the subject and widen my knowledge.All in all, my experiment was a success. Everything went well, and Ibelieve that the techniques and methods I utilize were accurate andsufficient enough to provide me with a sound set of conclusiveresults.

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