Experiment 1: Study of Solubility Equilibrium Data Treatment and Analysis Section 1: Solubility Product Constant Temperature (˚C) | Volume of NaOH used (mL) | | | | Titration 1 | Titration 2 | Average | 28 | 12.7 | 12.8 | 12.75 | 9 | 10.5 | 10.5 | 10.5 | 19 | 11.3 | 11.2 | 11.25 | 40 | 16.2 | 16.2 | 16.2 | 50 | 22.8 | 22.9 | 22.85 | Table 1: The volume of NaOH used in the titration at various temperatures. No. of moles of KHC4H4O6 = 1.45 g ÷ 188.177g/mol = 7.71 x 10-3mol
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Date Performed: January 10 & 15‚ 2013 Spectrophotometric Determination of the Equilibrium Constant of a Reaction R.J.V. Ortega and J.C.V. Gatdula Institute of Chemistry‚ College of Science University of the Philippines‚ Diliman‚ Quezon City‚ Philippines Received January 22‚ 2013 ------------------------------------------------- ------------------------------------------------- ------------------------------------------------- ABSTRACT -------------------------------------------------
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Determination of Equilibrium Constants Introduction Bromothymol blue is an indicator for many acid-base titrations. When adding different solutions within the indicator it is to react and change colors‚ in this experiment the different colors were blue‚ green‚ and yellow. In the following experiment‚ obtaining the absorbance levels for each one makes it possible to calculate the equilibrium constant. Materials and Methods For this specific experiment there are a few materials that are crucial
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Discovering the equilibrium constant for a reaction is very helpful for understanding that reaction. Knowing the equilibrium constant of a reaction is important because it allows you to calculate how much product will ultimately be formed during a reaction. Moreover‚ it also tells you how a particular mixture of chemicals will react. This is because chemical reactions always occur in the direction which will make the ratio of their products to reactants equal to the equilibrium constant.
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Spectrophotometric Determination of the Equilibrium Constant of a Reaction DEPARTMENT OF MATERIALS‚ METALLURGICAL AND MINING ENGINEERING‚ COLLEGE OF ENGINEERING July 26‚ 2012 ------------------------------------------------- ABSTRACT ------------------------------------------------- Before proceeding to test the next solution‚ we must first clean the cuvette‚ using similar steps earlier. First‚ we rinse with water‚ then with the solution‚ and then we fill it up and test
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Spectrophotometric Determination of Equilibrium Formal Report Matt DeLuca The Department of Chemistry‚ SUNY College at Brockport Brockport‚ NY 14420 CHM 206.04 Abstract: The main objective of this experiment was incorporating the use of spectrophotometry in an attempt to study the position of equilibrium. Furthermore‚ after the completion of this experiment‚ the formation of the equilibrium constant of the iron thiocyanate complex
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Analytical and Equilibrium Molrity Analytical Molarity is the total number of a solute‚ regardless of its chemical state‚ in one liter of solution • describes how a solution is prepared(recipe) 98.0 g H2SO4 dissolved in water diluted to 1.0 L. 1.0 M H2SO4 Equilibrium Molarity or species molarity is the molar concentration of a particular specie in the solution. • requires a careful analysis on how solutes behave when it is dissolved in solvents 1.0 M H2SO4 (AM) 0.0 M H2SO4
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Chemical equilibrium is the point at which the concentrations of reactants and products do not change with time. It would appear as if the reaction has stopped‚ but in fact‚ the rates of the forward and reverse reactions are equal‚ causing the reactants and products to be created at the same rate. This can be expressed mathematically in the form of the equilibrium constant. The following is the general equation for a reversible chemical reaction: aA+bB →cC+dD
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at equilibrium 2. To observe shifts in equilibrium concentrations as stresses are applied to the systems. 3. To observe a shift in equilibrium concentrations associated with changes in temperature. 4. To explain the observations obtained by applying Le Chatelier’s principle. Materials Refer to page 209 of Heath Chemistry Laboratory Experiments. Procedure Refer to pages 209 – 211 of Heath Chemistry Laboratory Experiments. Data and Observations Part I: Equilibrium Involving
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Experiment 19 - Determination of the equilibrium constant for the reaction Fe3+ (aq) + SCN( (aq) = FeSCN2+ (aq) Object: To determine the equilibrium constant by a colorimetric method Theory: Colorimetric methods of analysis are usually applied to the determination of small concentrations of either inorganic or organic materials in a solution. The constituent sought must be coloured or must be capable of reacting with a reagent to produce a substance having a suitable colour. Beers Law‚ which
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