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Lab Report: Single Displacement Reactions

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Based off the observations created in this lab, the following conclusions have been made in terms of single displacement reactions. Whether or not these types of reactions proceed can be predetermined by using the activity series. If the lone metal in the left side of the equation is above the second metal in the reactant compound then a reaction will take place. However, if it is not then the reaction will not occur. As shown by the metals zinc and magnesium, if they are closer on the series the reaction will be slow verses if they are farther apart. In each single displacement reaction that proceeds, there will always be a precipitate or a gas formed due to the cation or anion replaced in the reactant compound. Since the equations starts off with at least one single element and a compound, something will always be left over in the product. …show more content…

They occur when two ionic compounds are used as reactants and the anions and cations switch places between the two. This type of reaction will proceed provided that the reactions do not have the same cation or anion as explained in discussion question #3. Also, the products of the reactants must have at least one solid to indicate a precipitate is made. If all products are aqueous then the reaction did not take place as shown by the fourth reaction presented in discussion question #5. In the fourth reaction, please note that the original reactants were zinc sulphate and phosphorus nitrate. Phosphorus nitrate does not appear on the least of given reactants nor is it a true substance. It was likely a communication error and for this reason, sodium iodide was used in its

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With the data collected from this chemical reaction percentage yield of the precipitate can be calculated to determine the effects of impurities in the reactants on percentage yield. PRE-LAB QUESTIONS 1. What is the balanced chemical equation for the reaction in this investigation? 2. Which reactant is considered impure in this investigation?

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Discussion 1. Zn0 (s)+ Cu2+S6+O42-(aq) →Cu0(s) + Zn2+S6+O42-(aq) Zn0(s) → Zn2+(aq) + 2e- Cu2+(aq) + 2e- → Cu0(s) Zn0(s) + Cu2+(aq) → Zn2+(aq) + Cu0(s) Oxidant (oxidizing agent) is the element which reduces in experiment.

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Cadet Eric Wiggins Date: 18 September 2014 Course Name: Chem 100 Instructor: Captain Zuniga Section: M3A Identification of a Copper Mineral Intro Minerals are elements or compounds that are created in the Earth by geological processes. The method of isolating metals in a compound mineral is normally conducted through two processes.

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If any chemical is added or brought near another chemical, then a reaction will occur and physical and chemical changes will be seen. Procedure Procedure and Materials taken from Nelson Science Perspectives 10 pages 244 to 247 Material changes include: Glowing splint used in placed of limewater in Station 2 Magnesium

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The topic that the scientist has researched is the reaction rate of different particle sizes. In the experiment, the scientist will discover how the particle size of Alka Seltzer affects the rate of chemical reaction with water. The independent variable in the experiment is the particle size of the Alka Seltzer, while the dependent variable is the rate of reaction, or the volume of Carbon dioxide. The volume of carbon dioxide will be measured in ml. Also, a few of the constants in the experiment will be the amount of water, and amount of tablets.

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There are only two circumstances in which I think the copper could have been lost. The first chance where some of the lost mass of copper may have gone could have been during the first reaction. If distilled water was added to the solution before the chemical reaction finished, some copper may have been lost during that step. While all nitrogen dioxide gas seemed to have dissipated, perhaps, it was not finished yet. By stopping the reaction early, all of the solid, elemental copper may have not had a chance to react with the nitric acid, and some mass may have been lost during the step.

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Because of this, three different products (as previously mentioned) are potentially formed.1 The compound created from the reaction can be analyzed to determine

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To better understand this law, Cu(s) was transformed with different reactions only to return back to Cu s). The initial and final mass of Cu(s) was recorded to give the percent recovery of copper product at

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