Preview

Chemical Equilibrium

Good Essays
Open Document
Open Document
803 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
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 and turned dark brown when it was warmed.

Introduction Sodium chromate, Na2CrO4, is a crystallized powder or yellow crystals. It is soluble to water. It is toxic by inhalation, ingestion and/or skin contact. It is a strong oxidizer and absorbs moisture from the atmosphere. Sodium chromate can easily convert to sodium dichromate by treating it with an acid [1]. Copper is a soft, orange-brown metal that has been used by humans for years. Copper does not react with most acids. It does react with hot, concentrated sulfuric acid and with nitric acid [1]. Chemical Equilibrium happens when the reactants first comes together, their rate of reaction is determined by their initial concentrations [2]. Even though the reactants are constantly forming products and vice versa, the amount of the reactant and products does become steady. When the net charge is zero, the reaction has reached its equilibrium. When the concentration decreases, so does the reaction rate. But, sometimes there is a reversible reaction which re-forms the reactants. The rates of the forward reaction and reverse reaction become equal, so that the concentration stops changing.
Le Chatelier’s Principle states that a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium moves to counteract the change [3]. The system adjusts in such a way that the “stress” is partially relieved as it reaches to a new equilibrium. There are three ways that Le Chatelier’s Principle



References: [1] Ebing, Gammon. General Chemistry. 9th Ed. Charles Hartford. 2007 [2] Lodish H, Berk A, Zipursky SL. et. al. Molecular Cell Biology. 4th Ed. NY. W.H.Freeman. 2000 [3]http://www.chm.davidson.edu/vce/equilibria/temperature.html [4]http://www.chemguide.co.uk/physical/equilibria/lechatelier.html

You May Also Find These Documents Helpful

  • Better Essays

    Lab Penny Ante 2

    • 1080 Words
    • 4 Pages

    What is equilibrium? What happens to the amount of reactants and products when equilibri­um is reached? What if more reactants or products are added to a system already at equilibri­um? In this activity, pennies will be used as reactants and products in a reversible reaction to answer these questions and learn more about the fundamental nature of equilibrium.…

    • 1080 Words
    • 4 Pages
    Better Essays
  • Good Essays

    chem 2 lab 0404

    • 761 Words
    • 4 Pages

    1. The use of microscale techniques does not change the hazardous nature of the reagents we use. Briefly…

    • 761 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    After a reaction has occurred for awhile at a given temperature, the forward and reverse reaction rate will eventually be equal. Although you may get this confused, the concentration may not be equal, but the rate will. This occurs in a closed system. In other terms, dynamic equilibrium is when no change appears; as the rate of reverse and forward are equal. The relationship between reactants and products is portrayed in this property. For example; imagine there are 100 people at a party. Every ten minutes, 5 people leave; however coincidently 5 people arrive at the same time. The amount of…

    • 782 Words
    • 4 Pages
    Satisfactory Essays
  • Satisfactory Essays

    7.04 chem flvs

    • 430 Words
    • 6 Pages

    1. Explain in your own words what it means for a chemical system to be in the state of dynamic equilibrium. (4 points)…

    • 430 Words
    • 6 Pages
    Satisfactory Essays
  • Good Essays

    In a closed system, any reversible reaction will eventually reach a dynamic balance between the forward and reverse reactions. A system is said to reach chemical equilibrium when the rate of the forward reaction equals the rate of the reverse reaction. At this point, no further changes will be observed in the amounts of either the reactants or products. Chemical equilibrium can be further defined, therefore, as the state where the concentrations of reactants and products remain constant with time. This does not mean the concentration of reactants and products are equal. The forward and reverse reactions create an equal balance of opposing rates.…

    • 1412 Words
    • 6 Pages
    Good Essays
  • Powerful Essays

    Baltimore, David. Berk, Arnold. Darnell, James. Lodish, Harvey. Zipursky, S Lawrence. 2000. Molecular Cell biology 4th Edition. New York. W H Freeman & Company…

    • 3513 Words
    • 15 Pages
    Powerful Essays
  • Good Essays

    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 Thymol Blue Table 1…

    • 605 Words
    • 3 Pages
    Good Essays
  • Satisfactory Essays

    Chemical Equilibrium

    • 390 Words
    • 2 Pages

    1. Explain in your own words what it means for a chemical system to be in the state of dynamic equilibrium.…

    • 390 Words
    • 2 Pages
    Satisfactory Essays
  • Better Essays

    Experiment purpose:  To determine the effect of a change on a system at equilibrium and to correlate the observed responses with Le Chatelier’s principle.…

    • 1554 Words
    • 7 Pages
    Better Essays
  • Powerful Essays

    3. Use the dilution formula ( M1V1=M2V2) to determine #1 abs = 0.320 @ 10 sec. the concentration of Fe3+ and SCN2+ in each mixture. #2 abs = 0.331 @ 4 sec.…

    • 568 Words
    • 3 Pages
    Powerful Essays
  • Powerful Essays

    Diffusion and Osmosis

    • 3022 Words
    • 13 Pages

    References: * Lodish, H; Berk, A; Kaiser, C; Scott, M; Ploegh, H, Bretscher, M. 2007. Molecular Cell Biology, Freeman, United State of America.…

    • 3022 Words
    • 13 Pages
    Powerful Essays
  • Good Essays

    Unit 16 Study Guide

    • 4716 Words
    • 19 Pages

    The value of the equilibrium constant for a given reaction mixture is the same regardless of the direction from which equilibrium is attained.…

    • 4716 Words
    • 19 Pages
    Good Essays
  • Satisfactory Essays

    Chemistry Lab

    • 293 Words
    • 2 Pages

    Investigating Chemical Equilibrium (Experiment 19 A) Purpose: 1. to recognize the macroscopic properties of five chemical systems at equilibrium 2. to observe shifts in equilibrium concentrations as stresses are applied to the systems 3.…

    • 293 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Recall that for a reversible reaction, the equilibrium state is one in which the forward and reverse reaction rates are equal. In the presence of a catalyst, both the forward and reverse reaction rates will speed up equally, thereby allowing the system to reach equilibrium faster. However, it is very important to keep in mind that the addition of a catalyst has no effect whatsoever on the final equilibrium position of the reaction. It simply gets it there faster.…

    • 832 Words
    • 4 Pages
    Good Essays
  • Powerful Essays

    Chemical equilibrium is the state in which a chemical reaction proceeds at the same rate as its reverse reaction; the rate of forward and reverse reaction are equal, and the concentration of the reactants and products stop changing1. When this condition was met, there was no change in the proportions of the various compounds involved, and the reaction ceases to progress.…

    • 1427 Words
    • 6 Pages
    Powerful Essays