Freezing Point of Naphthalene I. Purpose To determine the freezing point of a known substance‚ naphthalene II. Materials ringstand gas source test tube test tube clamps thermometer naphthalene Bunsen burner goggles hose stopwatch III. Procedure 1. Assemble the Bunsen burner‚ attaching one end of the hose to the burner and the other to a gas source. 2. Assemble the ring stand so that a ring clamp is attached to the stand holding the test
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This paper is a full determination for certain chemicals and their boiling points. It lists some already but given the atomic numbers of any material this project includes a conversion and calculation chart to find the freezing point of most any material. GOOD LUCK! Abstract: In this lab we determined the freezing point‚ and Kf‚ of pure 2‚4‚dichloralbenzne as well as a 2‚4‚dichloralbenzne/biphenyl solution. We used this information to determine the molar mass of an unknown (#24) by the 3rd step
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Research Article Vol: 2; Issue: 1 SYNTHESIS AND ANALYSIS OF BENZOPINACOL FROM BENZOPHENONE BY PHOTOREDUCTION IN GREEN CHEMISTRY. 1 Lata.C.Potey‚ 2* Dr. Satish B. Kosalge‚ 3 Rajeshwari S. Sarode 1 2 Assistant Professor‚ Hi-Tech College of Pharmacy‚ Chandrapur. Principal‚ Hi-Tech College of Pharmacy‚ Chandrapur 3 Assistant Professor‚ Hi-Tech College of Pharmacy‚ Chandrapur. Date Received: 11 TH Jan 2014 Date of Accepted: th 16 Jan 2014 Date Published: 18th
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LECTERUR : EXPERIMENT 4 DETERMINING MOLECULE WEIGHT BY FREEZING POINT DEPRESSION METHOD STUDENT NAME : ID : LAB PARTNERS | | INTRODUCTION According to Anne‚ n.d‚ the freezing point of a liquid is decreased by adding to another compound to it. This is known as freezing point depression. The pure solvent will have higher freezing point than the solution. Colligative property of matter can explain more about freezing point depression. Whereas‚ colligative properties depends on the number
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Freezing Point Depression of Aqueous Solutions Abstract: The purpose of this lab was to find the freezing point depression of 0.5M aqueous solution NaCl‚ distilled water‚ 0.5M aqueous solution of CaCl2‚ and unknown solution A. However‚ the teacher gave us values to do our experiment. Introduction: The objective of this lab is to understand how a solute depresses the freezing point of a solvent; also to comprehend the process of super cooling and to measure the freezing point of solutions
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Experiment 3 Colligative Properties Freezing-Point Depression and Molar Mass By‚ Andrew Klingsporn Joby J. Chem 212 Dr. Chandana Meegoda 2/11/2009 Purpose The purpose of this experiment is to determine the Molar Mass of an unknown substance using its freezing point depression. Introduction There are two types of mixtures; homogenous and heterogeneous. Homogenous mixtures have components that are uniformly mixed‚ while heterogeneous mixtures do not. A solution is a homogenous mixture
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VI: Conclusion: The melting point of a compound is the temperature at which the solid is in equilibrium with its liquid. A solid compound changes to a liquid when the molecules acquire enough energy to overcome intermolecular forces holding them together in an crystalline lattice structure. The melting point range is defined as the span of temperature from the point at which the crystals first begin to liquefy to the point at which the entire sample is liquid. This data can be tabulated experimentally
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4/9/02 Effects of Salts on the Freezing Point of Water In this experiment‚ you will study the effect that several solutes have on the Freezing Point of water. When a solute is dissolved in a liquid‚ the temperature at which that liquid freezes decreases‚ because the molecules of the solute become attached to the water molecules‚ making it more difficult for the water to form its crystaline shape and form into ice. This process is called Freezing Point Depression. In this experiment‚ you will
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. Yes‚ comparably to TLC plate 2 and 3. The benzophenone is more neutral but as the same time its nonpolar‚ being that Silica gel in TLC 2 was polar and the solvent ethyl acetate-hexane is non-polar it moved relatively with the solvent. The stationary phase in TLC 3‚ alumina is non polar and the solvent ethyl acetate is polar so from the ideal that polar does not attract non-polar benzophenone stick stronger to alumina non-polar rather than moving up with polar solvent ethyl acetate as it did in
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In part one of my project you learned about how salt affects the freezing point of water. In my science project I wanted to see if salt affected the freezing point of water. I started by doing some experiments. My first experiment was whether tap water or salt water would freeze first. I first started by mixing up the salt water warming it for one minute and warming the tap for one minute also. My second experiment was what ice cube would melt fastest. I started by getting two bowls. Two ice cubes
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