Copper Cycle Chemists in industry often use stepwise procedures involving a sequence of chemical reactions to obtain a desired product. Hence, it does not have a starting or an ending point.                           Place 4 pieces each of blue and red litmus papers o... A: pH scale - Beginning with pure copper at the top of the figure, these are: Reaction 1: Oxidation of metallic copper with nitric acid (HNO 3). The copper first underwent a redox reaction with nitric The goal of this lab was to see if the mass of copper would be same after going through a series of chemical reactions. First reaction involves reaction between the copper and nitric acid, and copper changed from elemental state to an aqueous. The sequence begins with copper metal and ends with copper metal, so it is called a cycle of copper reactions. • With careful attention to quantitative lab practices, you should be able to recover all the copper you started with. What percentage of the copper did you recover. You should, I2 is produced by the reaction of 0.4235 mol of CuCl2 according to the following equation: 2CuCl... A: The balanced reaction taking place is given as, The initial mass of the copper was 2.004 grams. The Copper Cycle In this experiment, you will carry out a series of reactions to transform copper into various forms and learn more about the three main types of chemical reactions: precipitation, acid-base neutralization, and Explanation: A The electron transfer does not happen across the salt bridge, eliminating options (C) and (D). Don't use plagiarized sources. 1358 0 obj <>/Filter/FlateDecode/ID[<843CE49DD853C441BDEB50462A3B0F4F><4AF36D58698A5C4498484EB447890BFF>]/Index[1345 36]/Info 1344 0 R/Length 86/Prev 965158/Root 1346 0 R/Size 1381/Type/XRef/W[1 3 1]>>stream THE COPPER CYCLE: A Series of Reactions . Cu(s) CuC12(aq) 3. CYCLE OF COPPER REACTIONS. ABSTRACT The purpose of this experiment was to cycle copper through a series of different chemical forms by reacting the copper with different chemicals. The cycle begins with elemental copper, which in a first… You will carry out the Copper Cycle using the ordering you created in discussion. Suppose you start with 0.514 g of Cu. The solution gets warm while the reaction proceeds. Chemistry 11 Copper Cycle Stoichiometry Assignment 1) Consider the reaction below, which is the first step in the process of recycling copper. Let me know what you think of the lab in the comments.DISCLAIMER:This experiment must be performed outside or in a fume hood. Mass of the substance, m = 75.0 g 2. Suppose you start with 0.493 g of Cu. What kind of reaction is this? Transfer the balanced equations from the Procedure and circle the classification of each cquation Part A: Dissolution of Copper Balanced Equation Synthesis Decomposition Complete Oxidation Single Displacement Doble Displacement Part B: Formation of Copperill) hydroside Balanced Equation: Symthesis Decomposition Complete Oxidation Single … Cu(s)→ Cu2+(aq)+2e− C u ( s) → C u 2 + ( a q) + 2 e −. Oxidation reaction Q12: Give an example of decomposition reaction where energy is supplied in form of light. The original copper sample contained a specific number of moles of copper, and that amount of copper was present in every reaction, precipitate, and solution. View Lab Report - Copper Cycle Pre-Lab from CHEM 110 at McGill University. The Copper Cycle Alexes Montalvo Chem 1500-10 September 26, 2012 The Copper Cycle Introduction: The Copper Cycle is a popular experiment used to determine if an element, in this instance, copper, reverts to its elemental form after a chain of reactions.This experiment is very dangerous because of the reactions between the strong acids and bases. A Student Weighed A 25-ml Erlenmeyer Flask And Found It To Be 22.683 G. 2. A: Incorrect units are used in the final answer. h�b```���� cb� +[��6������AɃ���(+��dYc_��a ��T��(���`�x��JAb�,��{2���� ��0�H�h_�V�6�zZ�Kny�h�H��.oE�q Lt�h� z�*��� ���)�3uZ-\6���4˯�:(t"(�n2�S՝�)=)_w��Ls6���UX�f��I�1�GtH1[��G�ԕ���1H�6�׉����@���������� Get Your Custom Essay on The Copper Cycle Lab Report Just from $13,9/Page. Because no copper is added or removed between the initial and final steps, and because each reaction goes to completion, you should be able to quantitatively recover all of the copper you started with if you are careful and skillful. It is found in nature as the mineral chalcocite. sample through a series of five reactions • The end product will be your original copper sample, making this a cycle of reactions. In the first reaction, copper metal is oxidized by nitric acid to form copper (II) nitrate, Cu(NO. Thus, the same number of moles of copper was produced in the final reaction because the amount of copper remained constant throughout the experiment. y�9�Q@lC�c��q�Qs�K�D& ����ג�e�J���3��&61���>��.�?>.pҗӿf%9��j������C�"�:�FZ�}�u �+��X����&�%���9�Cs�n���patQRB�h}�V���Țf�O;Lj���֊|�.��ѻ Ƕ�.о����l2޼a߅ഺt`. The sequence begins with copper metal and ends with copper metal, so it is called a cycle of copper reactions. Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes!*. 0.10 M of Cu (NO3)2 solution is reacted with 2 M NaOH solution to obtain Cu (OH)2 . The cycle of copper reactions starts with solid copper metal and ends with solid copper metal. After performing all the reactions, you have 0.466 g of Cu. The cycle of copper reactions to be performed in this experiment. Weight of H2SO4 is 56.6 g. THE COPPER CYCLE: A Series of Reactions . The cycle of copper reactions starts with solid copper metal and ends with solid copper metal. Compare the intensity of the blue colour of copper sulphate solutions in test tubes (A) and (B). The cycle of copper reactions starts with solid copper metal and ends with solid copper metal. You will begin the lab with a piece of copper wire, convert the copper into a number of different compounds of copper and finally recover the copper. Copper(I) ions in solution disproportionate to give copper(II) ions and a precipitate of copper. It is then converted to copper (II) hydroxide, Cu(OH) 2. , by reaction with base. Chemical Reactions of Copper Experiment 9 9-3 d. A gas is formed upon mixing two compounds and/or solutions. Precipitation. From this blue solution, you will precipitate copper(II) hydroxide. 1345 0 obj <> endobj Si Ming (Andrew) Xu (260731351) CHEM 110 - 003 9/13/2016 Pre-Lab Questions: … The sequence begins and ends with copper metal, so it is called a cycle of copper reactions. Q: Identify the nucleophile and leaving group and draw the products of each substitution reaction. Final temperature, T2 = 775... A: The addition of HBr into a double bond occurs through a carbocationic intermediate. The four-reaction copper cycle featured in this experiment is summarized below. A Cycle of Copper Reactions In this experiment, you will begin with the element copper, and carry out a series of chemical transformations in which you will see copper in other forms. Chemical reactions have finished, the first reaction of the blue colour copper. Performed is shown in Figure 1 forms a layer of basic copper carbonate, eliminating options ( ). 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