identifying unknown solutions lab report

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November 29th, 2020

�v���J��� Place each unknown solution in a well plate and place Ph paper. To write balanced molecular, complete ionic and net ionic equations for reactions that occur between known solutions. A. See example 1. The You should submit an Unknown Preliminary Report as soon as you have completed the experiments described below: For the solid unknown, you will take an accurate mp, an IR spectrum using the KBr procedure, solubility tests and, based upon an analysis of this information, do specific functionality tests as described in the manual. endobj (c) What would you mix the unknown solution with? 1680 Words 7 Pages. Background: In this experiment you will react each of six known solutions with the other five known solutions. Place the solution that was found to be Hydrochloric Acid to each solution to find any at all reactions that would prove what solution is a carbonate. Abstract: In this lab an unknown, contaminated organic compound, “E”, was given to be purified and identified. <> The purpose of this experiment was to identify the unknown compound. $$�OU�G�-H�%P�W�x�Ob����Jm�����rK�PD��)\��)�URViF�@� �ׇH�9C=���Q�u��DZ���%��3�����t�롲@�Xhz��� qE8�"t�� tBl�Y�M��(q�K�{��1������ָ!��L���iQ֦����6��)_�u ۄP����mY��A�ㅦ���b�?�)�. The tests were the iodine test, Benedict’s test, and the biuret test. Introduction When given an unknown substance, there are only a few ways to determine what it is. Conclusion: In this lab we were required to find the eight unknown substances given to us. Lab Report Sheet: Alkaline Earths and Halogens Part 1: Solubilities of Salts containing the Alkaline Earth Cations (3 points) 1. 2 0 obj We were able to go through steps to eliminate chemicals and come to our final one. 3 0 obj Any substance that turns yellow as a result of the previous step is proven to be a nitrate form and the darker of the two is a result of silver nitrate. l9���}�D*""�{v�VU7��L�YI$������h����/������f֯��߮��o˷o���l�y��3��W�6����5��Ig����4����5���3��6���Y��waw#��ٿ����o��Eh�:v`ڼ��/ խe�+�zz�c=���/LK8��ɽ)�FO��B������aq�tz.Q�����r�`��yT{�n^ L�i��q�]m�dJ��=���C��>��T�w�‡[�������[V��t�w,N*ڵO�v�tâ�_����=����ݱbv���?K���/%���͒�v�\��@�/@�C�_r6`�Fg����\�_�.�dQ�$���+� �_�wĆT-נT��ԩ�&���lč"���~��Ȉ`�.�6㖑�YuVC�1�FC��J The tests that were done to determine the identity of the compound include qualitative solubility tests, quantitative solubility tests, measuring solution conductivity, anion and cation test, flame test, and formation of precipitate. Predetermine that Solution F is Copper due to its initial blue coloration. One way is to mention the names of the materials used and reference the lab manual for the procedure or method and then continue to elaborate when necessary. Be specific, but do not re write the lab manual. Unlike quantitative analysis, which seeks to determine the quantity or amount of sample, qualitative analysis is a descriptive form of analysis.In an educational setting, the concentrations of the ions to be identified are approximately 0.01 M in an aqueous solution. CHEM 1405 - Identifying Six Solutions Lab Report (Version B) Objective: To identify six unknown solutions by comparing their reactions with those of six known solutions. Abstract. You will then apply what you have learned by ... solutions that give an acidic response (pH < 7) when tested with litmus paper. We were able to figure out the substances by taking steps and figuring out the certain substances. One way is to measure its density at a given temperature. The test was observed for any change and was recorded. 4 0 obj endobj in my chemistry class we did a lab in which we were given 6 different solutions and had to mix all of them with each other and test the pH of the pure substances. Chemistry Lab report by Determining Unknown by Finding it's Boiling point And Density. The purpose of this lab is to test different solutions for macromolecules as well as to identify an unknown solution. CHEM 1405 - Identifying Six Solutions Lab Report (Version B) Objective: To identify six unknown solutions by comparing their reactions with those of six known solutions. Sign in|Recent Site Activity|Report Abuse|Print Page|Powered By Google Sites. <> Qualitative analysis is used to identify and separate cations and anions in a sample substance. Because solution B has not reacted with any testing solution, it is proven to be distilled water. Tweet; One of the most common general chemistry lab experiments, both in advanced high school classes as well as introductory college courses, is the identification of a series of unknown chemicals. Posted by The Chemistry Lab on 11/27/12 9:26 AM. The compound was identified to be N-Phenysuccinimide, because it had a melting range of 154.3-155.5 degrees Celsius. Analysis of Unknown Solids Scientific Method Inquiry Lab Activities Introduction Identify five unknown substances by using only distilled water, vinegar, and phenolphthalein. Example 1: "An unknown labeled as letter G was given out by the lab instructor. Identification of Unknown Organic Compounds Introduction The identification and characterization of the structures of unknown substances are an important part of organic chemistry. Although it is often possible to establish the structure of a compound on the basis of spectra alone (IR, NMR, etc. stream %PDF-1.5 The solution that causes the Paper to turn red is identified as an acid (Hydrochloric Acid HCL). Any pure substance has a specific density at a specific temperature. (Give the name or formula of the substance and the amount) (d) Explain how the results will allow you to determine which cation is present in the unknown solution? %���� In this experiment, the student will determine if a chemical reaction has taken place when two solutions are combined, describe the chemical reaction, and use this information and logic to determine the identity of ten unknown solutions. x��ZYo�H~��И' Place the solution previously found to be Sodium Carbonate every unknown solution to test for reactions. endobj Place each unknown solution in a well plate and place Ph paper. It was left undisturbed till it was 80 °C Step 2: While the water was heating, six test tubes were placed in a test tube rack and approximately 3mL of water, a glucose solution, a sucrose solution, starch solution, a fructose solution, and two unknown solutions were poured into each and labelled with their corresponding names.

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