Measurement Mass of eggshell = 3.15 ± 0.01 g Volume of HCl added = 50.00 ± 0.5 〖cm〗^3 Volume of solution = 250.0 ± 0.3 〖cm〗^3 Volume of NaOH pipetted = 25.00 ± 0.03 〖cm〗^3 Titration number Rough 1 2 Initial burette reading of NaOH/ ± 0.05 cm3 0.00 0.00 0.00 Final burette reading of NaOH / ± 0.05 cm3 11.80 11.70 11.20 Volume of NaOH titrated / ± 0.10 cm3 11.80 11.70 11.20 Titration table: data collected from burette of amount of HCl used for the colour of the solution with methyl orange
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to experimentally determine the molar mass of carbon dioxide (CO2) by measuring its volume and calculating its mass. CO2 which we will measure will arise as a product of a chemical reaction between Calcium Carbonate (CaCO3) and Hydrochloric acid (HCl) as it is shown in the chemical equation above. Once we find out the volume of the compound which molar mass we want to determine‚ it will be easy to calculate the number of moles by using the following formula; pV=nRT * p is pressure in Pa‚
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molar NaOH solution. 2. Record volume. 3. Measure out between 20 milliliters and 40 milliliters of the unknown HCl solution. 4. Record volume. 5. The amount of unknown HCl is then added to the 100-milliliter Erlenmeyer flask. 6. Add two drops of the indicator‚ phenolphthalein‚ to the acid in the flask. 7. Using the slider on the right hand side‚ add NaOH to the HCl in the Erlenmeyer flask (This action is known astitrate). Add the indicator until the color of the indicator turns
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0.25 molar NaOH solution. 2. Record volume. 3. Measure out between 20 milliliters and 40 milliliters of the unknown HCl solution. 4. Record volume. 5. The amount of unknown HCl is then added to the 100-milliliter Erlenmeyer flask. 6. Add two drops of the indicator‚ phenolphthalein‚ to the acid in the flask. 7. Using the slider on the right hand side‚ add NaOH to the HCl in the Erlenmeyer flask (This action is known as titrate). Add the indicator until the color of the indicator turns a
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measured by balance. While the reaction of eggshell with acid occurs‚ prepare the buret and clamp for titration. Make sure they are clean. Pour NaOH solution into the buret to the ’0’ level. Make sure all of the eggshell reacted with the HCl. If not‚ you can help the reaction by using the baguette. Put two drops of phenolophateine into each beaker using the plastic pipette. Take the first beaker and titrate the
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Calorimetry: Enthalpy of Neutralization Introduction: The purpose of this lab experiment was to determine the molar concentration of the unknown HCl by using a coffee cup calorimeter. A coffee cup calorimeter is made of Styrofoam cups with a thermometer that is placed from the top and into the calorimeter to measure the temperature as the reaction happens. The Styrofoam cup used for the calorimeter creates an isolated system as it acts as a heat insulator between the cup and the surrounding
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complete the assignment in the given interval of time‚ can work for longer hours without any break. My lifestyle is very simple. 4) The main turning point of my life is when I was blessed to join HCL Info Systems Pvt Ltd. 5)I have work experience more than 1 year. right now i am working in HCL Info Systems Pvt Ltd and my designation is Hardware and Network support services since March 27th 2010. As a Technical Service for Customer Support where resolve the issues of the customer on the call
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alkyl halides can be performed from a variety of starting materials and specific mechanisms: from alkenes by addition‚ from alkanes by substitution‚ and from alcohols via nucleophilic substitution. The reaction of alcohols with hydrogen halides‚ like HCl‚ HBr‚ and HI‚ would result to their corresponding alkyl halides and water. The formation of alkyl halides has different mechanisms‚ depending on the alcohol used for the synthesis. Tertiary alcohols react with hydrogen halides faster compared to the
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A SUMMER TRAINING PROJECT REPORT ON SOURCES & PROCESS OF RECRUITMENT & SELECTION AT HCL SUBMITTED IN THE PARTIAL FULFILLMENT FOR THE AWARD OF DEGREE OF MASTERS IN BUSINESS ADMINISTRATION EXECUTIVE SUMMARY Today‚ in every organisation personnel planning as an activity is necessary. It is an important part of an organisation. Human Resource Planning is a vital ingredient for the success of the organisation in the long run. The objectives of Human Resource Department are Human Resource Planning
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= 4.5. Therefore 4.5 mL of NaOH was needed to neutralize HCl. Table 3: The amount of NaOH (mL) needed to neutralize HCl in Condition 1‚ 2 ‚ and 3 and their 3 trials. Trial 1 (mL) Trial 2 (mL) Trial 3 (mL) Condition 1 4.5 4.0 4.0 Condition 2 8.0 8.0 9.0 Condition 3 9.5 9.0 9.5 2. Sample Average Calculation of Condition 1: Table 4: The average volume (mL) of HCl & NaOH in each Condition Average Volume of HCl & NaOH Condition 1 9.2 Condition 2 16.5 Condition 3
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