water of room temperature. We measured the salicylic acid on the balance. c)Cover the beaker with watch glass. Standard solutions are used to determine the concentration of other substances with which they react in known ratios/proportions. We will that for the specific fan conducting this experiment, the best efficiency point occurs at CQ = 0.2, the specific speed NS ~1.23. Background………………………………………………………………………………..2 However, after more NaOH base was added to the unknown acid solution, the solution eventually turned pink after swirling the flask. | | | b)Introduce a small amount of the concentrated acid solution into a 50cm3 beaker. c)Add some distilled water into the appropriate volumetric flask from the wash bottle. <> Determination of Concentration of Hydrochloric Acid in a Given Solution endobj After the difference in temperature from beginning to end of the reaction was taken, the Q = m∙c∙ΔT was used to find the Q of Water and system. nucleophilic substitution and characterize it by IR spectroscopy. Put one drop of carboxylic acid and one drop of alcohol on opposite sides of a piece of filter paper. <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/Annots[ 10 0 R] /MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S>> mix the layers. Ion exchangers are insoluble acids or bases which have salts which are insoluble, and this enables them to exchange either positively charged ions (cations exchanges) r negatively charged one (anion exchangers). Data processing: Abstract……………………………………………………………………………………………2 We disposed of all the materials by rinsing them down the sink with copious amounts of Neater. Aims: Methyl salicylic is the ester responsible for the odor oil of wintergreen. Appendix…………………………………………………………………………………………..7 OF Motion of Atoms and Molecules lab summary The preparation of an ester involves three stages which are synthesis of the ester, isolation of the ester and lastly purification of the ester. EXPT 2: eZ��8S*�ev�B_�?���]+����WZگFQ-?N�n]{��@���YO�C��k�[��'_�@����E�W�����3ᕉ%rd5�e�� �p�[�钗\�Y �-����%|�)��E �B�w4��p�.��G��� f�����d�����t�'��w�����u�2�T�9���5�2+n1LF�< �dw�#�Sr/;/�g����?���U��e6K�����n�s���iO�]��s��J˸�z�;?�'���-\���y���L���rE���V��܈��}�/���N�M��"#s���� For test tube C I hypothesized it would be methyl salicylic. �/��v:;4�9<=�?q>s��8>�Ł���W,���7�o�([�������*�F}ѡ�}��>���4F����V������X�/Jt�}��P����v�oN�P�g�X�P[a��~fxU*��c��Hk��N�Z�%z��>�Ε�Jш4�. It was found that iron was a yellow solution and nickel respectively had a greenish colour. TITLE: STANDARDIZATION and DETERMINATION OF THE CONCENTRATION OF HYDROCHLORIC ACID PRESENT IN A GIVEN SOLUTION Abstract Chemistry lab report(by abdazino abdalla) endobj Than followed by writing chemical equations for each reaction and ester formed. Results and Calculations The separation of a Fe3+ and Ni2+ mixture was firstly investigated; followed by the determination of the Fe3+ and Ni2+ content (concentration) in the original mixture. 4. Standardization, therefore, refers the process in which the value of a potential standard is fixed by a measurement made with respect to a standard whose value is known; or simply . Quantitative Data 18.2 UNIT: CHEMISTRY 1 (SCH 2109) endobj 21.3 . By continuing we’ll assume you’re on board with our cookie policy. The concentration of Ni2+ and Fe3+ ions was to be calculated. Table 2: Table of reading of the burette initially filled with 25mL of 0.201moldm-3 sodium hydroxide (NaOH) to titrate 25mL (±0.03mL) of unknown acid X in mL (±0.05mL) after each titre. Objective Ion exchange materials are insoluble substances containing loosely held ions which are to be exchanged with other ions in solutions which come in contact with them. Standardization Conclusion………………………………………………………………………………………...7 MATRIC NO : Attach a reflux condenser and, using a heating mantel, reflux the mixture for 1 hour (do not forget to add boiling stones). Synthesis of Esters Lab Report GSEs: ... with a carboxylic acid, an ester is formed. 10 mL of water was added to the funnel and shaken to When dissolving the acid X in the water, most of it did not dissolve and become whitish foam sitting at the top of the solution. The concept of this lab was to find the difference in temperature from the beginning to end of combustion of magnesium and calculate the standard heat of combustion of magnesium by using the calorimeter and a thermometer. 2 0 obj x��ZYs�F~W��C?r6R�}�IVmiK^��ƒ#O*�r�5C��h4��_�8xsZC9�Ksp�@�y���{s���2�bq���D���*�*��2�bqt�?��z���k|y���9�8�����, To determine the strength of a given solution of Hydrochloric acid (HCl) <> Qualitative data Procedure. We labeled the four test tubes A to D and placed them in the test tube rack. H R R We cooled the test tubes by immersing them in a cold water bath. By using the thermometer, we found out the change in temperature which helped to find the specific heat of water. They all produced water at the end and the catalyst sulfuric acid completed the reactions. Preparation of Esters Introduction Esters are known for their pleasant smells such as perfumes and artificial flavorings in contained labs. Also, the point of combustion of magnesium was to see how much heat would be released from fireworks such as sparklers. %PDF-1.5 Task Practical Report Aim Produce three different esters by using a range of carboxylic acids and alcohols. The solid was formed in the mixture and the flask was Purpose The purpose of this lab Is to complete four different synthesizing reactions and to Identify Its odors. Scope………………………………………………………………………………………3 This experiment introduces the use of dimensionless analysis and conventionally analytical method to survey the performance of centrifugal pump. Third titre For test tube B I hypothesized the final ester would be octal acetate. | | | The structural formula for esters can be represented as R-COO-R’. Fill a 250 mL beaker half full with water, and heat the water to 60oC with a Bunsen burner. Procedures…………………………………………………………………………………………5 PROCEDURE. Discussion…………………………………………………………………………………………6 To a small test tube, add approximately 1 g of a salicylic acid and 1 mL of methanol. 2. Common... ... INTRODUCTION 2.0 mL of 1-bromobutane, 3.0 g of sodium benzoate, 5.0 mL of water, 4 drops of ��vPtN(�s%�����JyV��Vb�oqe��ZNc�ek-˂b#����Zg:�$��\�Ff 3. Synthesizing for a complete reaction involves a strong acid which makes the esters a final product. The class was assigned to combine alcohols and carboxylic acids in order to create different type of esters. Results……………………………………………………………………………………………..6 The 2. Section A: Preparation of 100.0cm3 0.480 mol/dm3 HCl solution Record the odor … 3 0 obj 3/22/14 Mr. Mihordea ���l��,�����Z� �ŋ�I�{K#@F���k�6�v*��͙MB�8i+U]�0�͉ݒrU�H��8��o�є|� Q�/��O��34���������l�([�Mhg�w�i��8��,��3��ܑG�8�Zuׁ��7�":q#��%�b��h�*FD[��x� b)Dissolve the pellets in 100cm3 of distilled water. NAME : The reactions were exothermic because of heat that was released into the surroundings from the reaction. PRACTICUM : H H H Waft the vapor toward your nose and describe the odor of the acid and alcohol. Place 15 mL (12.2 g, 0.138 mole) of isopentyl alcohol in a 100-mL round-bottom flask and add 2O mL (21 g, 0.35 mole) of glacial acetic acid. d) Insert the solution into burette... ...Kevin Nam Honors Chemistry Label four test tubes A-D and place in test tube rack. of the final product is determined after the synthesis. DEPT: CIVIL ENGINEERING H 2 SO 4 (CAUTION: highly corrosive). We put approximately 120 ml of tap water in a 250 ml beaker. Background and separating funnel and washed with 15% NaCl solution. Determine the ester formed by using the smell given off by the products and thechemical equations for the three different reactions. Therefore, they were all esters that produced good smelling organic chemicals.
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