"Chemical Equilibrium" Essays and Research Papers

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Chemical Equilibrium

Abstract Chemical equilibrium occurs when a reversible reaction is happening forward and backward, at the same time by the same amount, is equal. Two procedures were made. First is the Effect of Concentration on Equilibrium. The solution became orange when it was diluted with ammonium hydroxide and the solution became yellow when water was added to the solution. In the second, Effect of Temperature on Equilibrium, the solution turned into a light brown gas when it was placed in the refrigerator...

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Chemical Equilibrium

Experiment 3: Chemical Equilibrium Purpose The purpose of this experiment was to determine the equilibrium constant for the formation of FeSCN2+. Introduction Chemical equilibrium is the point in a reversible reaction where the concentration of the reactants and that of the products remains constant. This point of equilibrium is referred to as the Kc value, which can be obtained using the formula: Kc = [product] [reactant] In this experiment, we used a spectrophometer to...

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Chemical Equilibrium

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...

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Determination of the Equilibrium Constant for an Esterification

this experiment equilibrium. Esterification is a slow and reversible reaction. The equation for the reaction between an acid RCOOH and an alcohol RẬᶦ can be the same or different; at equilibrium, the concentrations of both reactants and products are constant. In this experiment set up, the reaction between ethanoic acid and ethanol to produce ethyl ethanoate and water is a reversible reaction as shown by the following equation: CH₃COOH + CH₃CH₂OH↔CH₃COOCH₂CH₃ +H₂O The Equilibrium Law states that...

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Chemical Equilibrium

Introduction: Chemical equilibrium is when the concentrations of the reactants and products have reached a state where reactions occurring in one direction are at the same rate of reactions occurring in the opposite direction. This process, called dynamic equilibrium, is the main subject of Le Chatelier’s Principle. Le Chatelier pointed out that if a system at equilibrium is subjected to a stress that momentarily causes the system to be not in equilibrium, a spontaneous change will occur to...

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Effect of temperature, concentration, and pressure on equilibrium Lab Actvity

temperature, concentration, and pressure on equilibrium Introduction Our ongoing discussion has been on systems at dynamic equilibrium: for a reversible reaction, the rate of the forward reaction is equal to the rate of the reverse reaction. What happens if equilibrium is disturbed? In this lab activity, we are going to examine the effect of changing reaction conditions on the position of equilibrium. Part I: Effect of temperature We will consider the equilibrium system [Co(H2O)]2+(aq) +...

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Chemical Equilibrium: Le Chatelier Principle

Chemical Equilibrium: Le Châtelier’s Principle   Abstract This experiment entitled "Chemical Equilibrium" aims to help students to investigate the effects of concentration and temperature upon the position of equilibrium in a cobalt chloride solution, Co(H2O)62+. In this experiment, cobalt crystal is dissolved with distilled water and ethanol which the initial colour is purple-pinkish and a few drops of concentration of HCl is added to the test tube, the final colour is in deep blue colour. Upon...

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Buffer Solutions

Its pH changes very little when a small amount of strong acid or base is added to it and thus it is used to prevent any change in the pH of a solution. Buffer solutions are used as a means of keeping pH at a nearly constant value in a wide variety of chemical applications. Many life forms thrive only in a relatively small pH range so they utilize a buffer solution to maintain a constant pH. One example of a buffer solution found in nature is blood. So far in discussing pH we have dealt only with solutions...

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TUTORIAL 2 CHEMICAL EQUILIBRIUM

CHM 096 TUTORIAL 2 (Chemical Equilibrium) 1. Write the equilibrium constant expression, Kc, for each of the following reactions: a) 2NO(g) + O2(g) ⇄ 2NO2(g) b) The decomposition of solid potassium chlorate to solid potassium chloride and oxygen gas. c) 4HCl(g) + O2(g) ⇄ 2H2O(g) + 2Cl2(g) d) 2NO2(g) + 7H2(g) ⇄ 4H2O(l) + 2NH3(g) e) H2O(g) + C(s) ⇄ CO(g) + H2(g) f) The reduction of solid copper (II) oxide with hydrogen gas to produce copper metal and...

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Chemical Equilibrium and Kinetics

Temperature to the reaction C. Effect of Concentration to the Reaction Rate D. Effect of Catalyst to the Reaction Rate E. Chromate-Dichromate Equilibrium F. Thiocyanatoiron (III) Complex Ion Equilibrium G. Weak Acid Equilibrium (Ionization of Acetic Acid) H. Weak Base Equilibrium Ionization of Ammonia I. Saturated Salt (Sodium Chloride) Equilibrium On part (A) we are to observe which reaction rate is faster, and doing the experiment. We have concluded that: “Aluminum had faster rate of reaction...

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