Chemistry Lab Report Purpose The purpose of this lab is to determine the identity of an unknown liquid by measuring its density and its boiling point and try to match it with those solutions given in Table 2 of experiment 2. Procedure Part A In Part A‚ The main purpose was to find the determination of the density of the unknown (j41) and by doing that we had to determine volumes of the unknown liquid (j41) using three different volumetric devices which are graduated cylinder‚ pipette
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ESTIMATION OF IRON IN IRON ORE-SPECTROPHOTOMETRIC METHOD By: Taylor Villari Experiment conducted on 7/22/13 Components of each test tube examined in the spectrophotometer Trial | Volume of Iron solution (mL) | Micrograms of Iron | Volume of 10% sodium acetate | Volume of 0.1% o-phenanthroline | Volume of water (mL) | 1(blank) | 0.0 | 0.0 | 1.0 mL | 1.0 mL | 8.0 mL | 2 | 1.0 mL | 10 | 1.0 mL | 1.0 mL | 7.0 mL | 3 | 3.0 mL | 30 | 1.0 mL | 1.0 mL | 5.0 mL | 4 | 5.0 mL | 50 | 1.0 mL
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Unit 4 M1: Explain how accuracy may be ensured in the techniques used Cynthia Nzeh Task 1 1) Discuss how your choice of equipment and how it affected the accuracy of your method. Discuss good volumetric technique. 2) Calculate the apparatus error for the method used. 3) Given the value calculated by the senior technician calculate your error and comment on this error in relation to the apparatus error of the method. In the titration‚ I used these available instruments to ensure my results would
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Name: Bhumiben Shah Date: 31st Jan ‘13 EXPERIMENT # 2 RECRYSTALLIZATION; FILTRATION OBJECTIVES: 1. To perform recrystallization and filtration of given impure organic compound. 2. To purify impure acetanilide using reflux condenser apparatus and Hirsch funnel filtration. 3. To determine percentage recovery of pure material (which is)‚ purified by recrystallization and filtration. SAFETY PRECAUTIONS: 1. Operate the aspirator with the maximum water-flow using a stop cock to
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Apparatus Material and Equipment: 0.00200 M KNCS‚ 0.00200 M Fe(NO3)3 0.200 M Fe(NO3)3‚ 0.10 M HNO3‚ 5 Cuvettes‚ 1 colorimeter 4 100ml beakers‚ 5 Test tubes 2 250ml Graduated cylinder. The first step is to calibrate the colorimeter with0.20 M Fe(NO3)3and set the absorbance at 470 nm since it is known to keep an acidic solution throughout the entirety of the experiment. It was important to do this right at the beginning of the lab since the zeroed value of the acid was the
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I. Title: Analysis of a Commercial Bleach II. Purpose: III. Materials: Commercial bleach‚ 5% NaClO. (5 mL). Hydrochloric acid (HCl)‚ 3M. (6 mL). Potassium Iodide (KI). (6 g). Sodium thiosulfate solution (Na2S2O3)‚ 0.100 M. (70 mL). Starch solution 2%. (3 mL). Safety goggles Apron Digital scale Buret Buret clamp Erlenmeyer flask Pipet bulb Ring stand Ttransfer pipet‚ 5 mL and 25 mL Volumetric flask‚ 100 mL Stopper Wash bottle Distilled water Weigh boat Beakers‚ IV. Procedures:
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Practical Task: To compare the concentration of vitamin C in different brands of orange juice. Juice sample provided: 0.1% vitamin C solution‚ fresh orange juice‚ You C 1000 orange water. Aim of investigation: To compare and verify the amount of vitamin C in Mr. Juicy and You C 1000 orange juice. Introduction: Problem: To compare the concentration of vitamin C Hypothesis: Concentration of vitamin C in Mr. Juicy is about 0.02 % Concentration of vitamin C in You C 1000 orange water
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Experiment 5 Title: Volumetric Analysis – stoichiometry Purpose: To determine the exact concentration of a monobasic acid‚ HX (KA1) Materials and apparatus: 1. Volumetric flask and stopper (250cm3) 2. Electric balance ±0.01 g 3. Pipette and pipette filler (25cm3) 4. Volumetric flask and stopper (100cm3) 5. Burettes (50cm3) 6. Retort stand and clamp 7. White tile 8. Wash bottle filled with distilled water 9. Spatula 10. Titration
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Sasha Thiel 09.10.2012 CH203 Lab Experiment 1: Isolation of the Active Ingredient in an Analgesic Drug Pre-Lab: A. Least accurate to most accurate 1. Beakers (5ml markings) 2. 10ml graduated cylinder (0.1 markings) 3. 5ml vials (0.1 and 0.3 markings) 4. 1ml plastic pipets (0.1 ml markings) 5. 1ml syringes (0.1 ml markings) 6. 1ml graduated volumetric pipets (0.01 ml markings) B. A 1ml graduated volumetric pipet is the best to use if you want 0.15 ml of reactant
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Determining the Concentration of a solution: Beer’s Law Objective In this lab of Determining the concentration of a unknown solution: Beers Law. We determined the concentration of a unknown CuSO4 solution by measuring its absorbance with the colorimeter. With all the calculations we were able to solve the linear regression Equation of absorbance vs. concentration and the alternate method. Materials Vernier LabPro or CBL 2 interface .40 M CuSO4 solution Computer or handheld
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