thermometer and placed in a Thiele tube filled with oil. The tube was heated by a Bunsen burner at approximately 1 °C per minute. Melting point temperatures were recorded at the first indication of fluid and then when the sample had turned completely liquid. Two trials were completed on each sample ². The melting point of 10% naphthalene / 90% Biphenyl mixture was determined by electronic instrumentation. Two samples were prepared and placed in closed end capillary tubes and then inserted into
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Chromatography • • • Separation based on polarity of compounds Two potential phases for a compound to exist in: mobile and stationary Partitioning of compounds between mobile phase and stationary phase occurs: o Compounds that are less polar move more in the mobile phase‚ those that are more polar “stick” more on the stationary phase o These polarity differences cause compounds move at different rates and therefore can be separated 1. Mobile Phase: the phase the moves; can be gas or
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Lab report: Viscosity of Liquids Introduction This experiment focuses on measurements of different trials of various concentrations. The collected data is used to compare and contrast to the ideal binary solutions and their components. The Ostwald viscometer is a useful laboratory equipment to measure the viscosities of many binary solutions. Background Molecules have the ability to slide around each other‚ result in a flow. Such a flow has a resistance called viscosity. Microscopically
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[pic] Soap From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search For other uses‚ see Soap (disambiguation). [pic] [pic] A collection of decorative soaps‚ often found in hotels [pic] [pic] Two equivalent images of the chemical structure of sodium stearate‚ a typical soap. In chemistry‚ soap is a salt of a fatty acid.[1] Soaps are mainly used as surfactants for washing‚ bathing‚ and cleaning‚ but they are also used in textile spinning and are important components of lubricants
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Experiment 5 Title : Thin Layer Chromatography Objectives: i. To distinguish polar and non-polar solvents. ii. To familiar with the analysis technique by using the thin layer chromatography. iii. To differentiate the retention factor‚ Rf for different compounds. [pic] Result: |Compound |Distance traveled by the compound | |o-nitroanaline |2.45
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Name:Shin Park|Date:06/14/2013| Exp 5: Liquids and Solids|Lab Section: | Data Table: Boiling Point Trial 1 Trial 2 Trial 3 Temperature when the last bubble has emerged ___83_˚C __82__˚C __82__˚C Average temperature from all three trials ___82.33_˚C % error ___.0849_% Melting Point Trial 1 Trial 2 Trial 3 Temperature when the acetamide melts __82__˚C _81___˚C __82__˚C Average temperature from all three trials ___81.66_˚C % error
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Ink Chromatography Lab Background Information Paper chromatography is an analytical method that is used for separating and identifying mixtures of substances into their smaller parts. Paper chromatography works because the ink used contains several dyes (pigments) that when place on porous paper are dissolved in a solvent by capillary action. When the pigments (solutes) are dissolved in the solvent (water & alcohol mixture) they move through the paper at different rates depending on their
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LABORATORY REPORT UNIT OPERATION FST359 EXPERIMENT 1 : LIQUID-LIQUID SEPARATION BY DISC-BOWL CENTRIFUGE. NAME : ANAS BIN MOHD KAMAL. ID : 2013467978. GROUP : AS1164A1. LECTURER : SIR MOHAMAD SHAHRIMI BIN HASHIM. OBJECTIVE : 1. To separate cream from dairy milk and coconut milk. 2. To measure the quantity and density of cream and skim milk. MATERIALS : Dairy milk powder and coconut milk. APPARATUS : 25 ml specific gravity (SG) bottles
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Liquid Nitrogen Liquid nitrogen is nitrogen in a liquid state at a very low temperature. Its chemical formula is N2. Manufacturing of Liquid Nitrogen Liquid nitrogen is made by cooling and compressing air straight from the atmosphere. The type used to produce large amounts of liquid nitrogen looks vastly different but really happens is that air squashed and cooled . When you squash it‚ air molecules are forced closer together. If you also cool it down the molecules can slow down enough to
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Date of Experiment October 7‚ 2012 Report Submitted: October 7‚ 2012 Title: Liquids and Solids Purpose: The purpose of this experiment is to determine the boiling point of liquids and the melting point of solids. Procedure: I got all of my materials together and set up. I poured rubbing alcohol in a beaker and rubber banded it with the thermometer. I logged the last bubble that came out of the capillary tubes. After that I crushed the acetamide and carefully put it in the capillary tube
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