Chemistry : The Chemical Equilibrium State

1303 WordsAug 10, 20146 Pages
Introduction Analytical chemistry was used for this project to determine the level of the reaction Fe3+ + SCN- ↔ FeSCN2+. According to ACS Chemistry for Life, “analytical chemistry is the science of obtaining, processing, and communicating information about the composition and structure of matter” (Analytical Chemistry). In this experiment the interaction of iron(III) (Fe3+) and thiocyanate (SCN-) formed, which was processed and now being communicated through the quantitative data collected. Chemical reactions are constantly moving forward towards the products side as well as in reverse towards the reactants side and at times when both are done shifting the reaction is said to have come close to “completion or equilibrium” (“Determining an Equilibrium Constant Using Spectrophotometry and Beer’s Law”). “The chemical equilibrium state is when the rate of the forward reaction equals the rate of the reverse reaction” (Larsen). The reaction might not be done but it has stopped shifting. According to the book Chemistry a Molecular Approach, Le Chatelier’s principle states “when a chemical system at equilibrium is disturbed, the system shifts in a direction that minimizes the disturbance” (Tro, 2011, p.677). Le Chatelier’s principle explains why chemical reactions are consistently shifting and once the system has shifted forward to the products or in reverse to the reactants that is when the chemical reaction has approached an equilibrium state. The overall goal of this

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