Experiment 5: Shifting Equilibrium A solution is in equilibrium when the rate of forward reaction and the rate of reverse reaction are equal. This equilibrium may be disturbed when the concentration of the reactants‚ the concentration of the products or the temperature is changed. If the process involves gases‚ a change in pressure can also affect the position of equilibrium. The concept behind this is Le Chatelier ’s Principle which states that when a system is disturbed through application
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Abstract In this experiment‚ the absorbance of KMnO4 was measured by spectrophotometric method to determine the molar concentration and the molar extinction coefficient of KMnO4. In part 1‚ in order to determine the maximum absorbance wavelength of KMnO4‚ we measured the absorbance of the sample solution which contains KMnO4 at the wavelengths between 330nm and 660nm‚ and plotted the λ and A points; the λmax was 530nm. In part 2‚ the effect of concentration on the absorbance was examined. We prepared
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Determination is a positive emotion that involves persevering towards a difficult goal in spite of obstacles.[1][2] Determination occurs prior to goal attainment and serves to motivate behavior that will help achieve one’s goal. Empirical research suggests that people consider determination to be an emotion; in other words‚ determination is not just a cognitive state‚ but rather an affective state.[3] In the psychology literature‚ researchers have studied determination under other terms‚ including
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Equilibrium In your text (Chang‚ 6th Ed) : Ch. 15 Chemical Equilibrium‚ esp. Section 15.3 Purpose: The Law of Mass Action will be examined via a series of samples using the same reaction‚ but different stating concentrations. The equilibrium constant‚ K‚ for each reaction will be calculated‚ demonstrating that K for a given reaction at a fixed temperature is a constant‚ independent of starting concentrations. Background: For a general reaction aA + bB ↔ cC + dD‚ the Law of Mass Action
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Exercise 3: Conditions for Equilibrium Laboratory Report Raphael Luis Hizon‚ Camille Janine Icaro‚ Dennis Edward Lagman‚ Michelle Laynes Department of Math and Physics College of Science‚ University of Santo Tomas Espana‚ Manila Philippines Abstract Equilibrium is when all the forces that act upon an object are balanced but not necessarily equal. The experiment consists of four activities. The Equilibrant Forces‚ First Condition of Equilibrium‚ Locating the Center of Gravity and Second
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In this experiment‚ equilibrium will be examines in the reaction beteween the iron (III) ion and the thiocyanate ion: Fe3+ (aq) + SCN- (aq) ------ FeSCN2+ (aq) The FeSCN2+ complex ion has a blood red color while the iron and the thiocyanate ion are colorless. Therefore‚ the shift in the reaction can followed by noting a change in the intensity of the clood red color‚ which indicates a change in the concentration of the complex ion FeSCN2+. If the reaction shifts to the right‚ the blood red color
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LAB REPORT 4 DETERMINING AN EQUILIBRIUM CONSTANT CAUSION 1. Potassium thiocyanate (KSCN) is hazardous 2. Wear protective material before performing the experiment. INTRODUCTION This experiment outlines the techniques necessary to determine the equilibrium constant for the formation of an iron(III) thiocyanate complex ion (FeSCN2+) from Fe3+ and SCN- . The quantitative preparation of several solutions and subsequent measurement of the solution absorbance
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THE CONSTANT GARDENER CHARACTER ANALYSIS Major Characters: Who is he/she? Role and function. Connotaions of name What values or ideas do they represent? Justin Quayle Tessa Quayle Sandy Woodrow Kenny Curtiss Sir Bernard Pellegrin Arnold Bluhm Tim Donohue Ghita Pearson Dr Lorbeer IN-DEPTH ANALYSIS of MAIN CHARACTERS Consider what main techniques are used to present an impression of
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CHEMICAL EQUILIBRIUM Reversible reactions and dynamic equilibrium Ammonia (NH3) is an important industrial chemical that is used in the manufacture of fertilisers. It is manufactured by reacting hydrogen with nitrogen. The reaction is said to be reversible and the conversion of reactants to products is never complete. N2 + 3H2 2NH3 A reversible reaction is a reaction which can take place in either direction When the concentrations of the reactants and product have become constant‚ a state
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07.04 Equilibrium: Lab Report Equilibrium Lab Report Data and Observations: Part I ROUND CANDIES ON R SIDE CANDIES ON P SIDE 0 40 0 1 20 20 2 15 25 3 14 26 4 14 26 5 14 26 6 14 26 7 14 26 8 14 26 9 14 26 10 14 26 Ratio = 0.7 Part II ROUND CANDIES ON R SIDE CANDIES ON P SIDE 0 20 20 1 5 10 2 2.5 2.5 3 0.6 1.5 4 0.3 0.3 5 0.8 0.15 6 0.04 0.4 7 0.1 0.02 8 0.005
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