Exercise 1 Binary Solid-Liquid Diagram CHEM 112.1 – 2L Group 2 I. Data and Results Table 1.1 Break and arrest temperature of diphenylamine-naphthalene mixture. Table 1.1. Mole fraction of naphthalene‚ χB‚ and corresponding arrest and break temperature at each run. Run number | Mole Fraction‚XB | Ave. break temperature‚ ˚C | Ave. arrest temperature‚ ˚C | 1 | 1 | 72 | 35.4375 | 2 | 0.868388 | 72 | 35.4375 | 3 | 0.725218 | 62 | 35.4375 | 4 | 0.568895 | 49 | 35.4375
Premium Phase Thermodynamics Melting point
References: Anon.‚ 2009. Lead or Tin Phase diagrams. [Online] Available at: http://www.sanjose.edu/labnotes/tech25 [Accessed 09 April 2013]. Bunnelle‚ W. H.‚ Meyer‚ L. A. & Glaser‚ R. E.‚ n.d. Recrystallization and Melting Point Determination. [Online] Available at: www.chem.missouri.edu/.../Recrystallization%20notes.doc [Accessed 09 April 2013]. Garland‚ C. W.‚ Nibler‚ J. W. & Shoemaker‚ D. P.‚ 2003. Experiments in Physical Chemistry. 7th Edition ed. New York: McGraw-Hill
Premium Phase Melting point Temperature
MME 3210 Materials Processing Techniques Laboratory Assignment – Sand Casting of an Aluminium 13wt% Silicon Alloy 1) Process Attributes Waste shown yellow* Waste shown yellow* After taking part in the sand casting laboratory session it was made clear that the process possessed many advantages and disadvantage‚ both from the process itself and from the final part produced. Observing the process step by step it was noted that the tasks carried out by the operator were not very difficult
Premium Melting point Solid Liquid
09/17/13 Che 102L Lab # 4 Molar Mass by Freezing Point in Anti-Freeze. Objective: to determine the freezing point of pure naphthalene‚ determine the molar mass of an unknown by measuring the freezing point depression of a solution of the unknown in naphthalene. Materials: Beakers 600 mL‚ 2-250 mL‚Crystal Ice‚20 g of NaCl‚Stirring Rod‚Thermometer‚Foil‚ Water‚ 10 mL‚ Cylinder‚ 25 mL 100 mL Dropper‚ 2 Test Tubes. Procedure: Filled 600 mL beaker with ice‚ took temperature until it got
Premium Chemistry Liquid Water
The unknown carboxylic acid’s melting point was 108°C according to the Mel-Temp machine. The melting point is the temperature at which a solid precipitate changes into its liquid form upon heating. The melting point of benzoic acid‚ the aromatic carboxylic acid was 122°C. Thus‚ the product contained impurities which caused the solid to melt at a lower temperature than the actual temperature. Pure solids typically melt at higher temperatures while impure solids melt at lower temperatures. This is
Premium Temperature Water Liquid
Determination of Melting and Boiling Point of different Organic Compounds Bakare‚ Abimbola Kristine‚ C. Professor Miranda Marilyn‚ school of chemical engineering and biotechnology‚ Mapua Institute of Technology‚ CHM145L-B11 ABSTRACT A melting point of a solid is the temperature at which the first crystal just starts to melt until the temperature at which the last crystal just disappears. Thus‚ the melting point (m.p.) is actually a melting range. The melting point of a substance depends
Premium Melting point Temperature Electron
Title: Separating the components of “Panacetin” Name: Ip‚ Wing Chung (Vincent) Lab Partner: Ma‚ Siyin Date: 2/3/2013 Introduction: The purpose of this experiment is to investigate the composition of compounds in Panacetin. Generally‚ it is made up of sucrose‚ aspirin and an unknown component‚ either acetanilide or phenacetin. SinceBy using different techniques‚ such as filtration‚ extraction‚ and evaporation‚ those three components have been isolated out‚ which is based on varies solubility
Premium Liquid Temperature Solid
The crude naphthalene had a melting point range of 85°-90° C while the 35.4% yield of pure naphthalene had a melting point range of 70°-76° C. Recrystallization was used to purify the salicylic acid. Recrystallization is the process of dissolving the original solid in a hot solvent and then allowing the solution to cool to let the solid crystallize again. The crude salicylic acid had a melting point range of 150°-153° C while the pure salicylic acid had a melting point range of 155°-158° C. (Percent
Premium Melting point Diethyl ether Temperature
Aim: To investigate the difference between the melting point of dark and milk chocolate. Hypothesis: If both chocolate is heated then dark chocolate will melt faster because milk chocolate has more fats Variables (i) Independent: Two substances will be tested dark chocolate and milk chocolate. (ii) Dependent: The temperature at which each substance melts
Premium Melting point Chocolate Types of chocolate
Old Dominion University ORGANIC 214 Alkene Addition Submitted by: Alkene addition: Bromination of (E) Stilbene Introduction: In this lab we used the greener approach‚ which involves the addition of bromine across a double bond. When bromine reacts with E-stilbene (trans-1‚2-diphenylethene)‚ two new chiral carbons are created from the sp2 carbons‚ therefore 3 different dibrominated stereoisomers are possible: meso-(1R‚2S)‚ or the raceminc mixture-(1R‚2R) or (1S‚2S)-dibromo-1‚2-diphenylethane
Premium Carbon Melting point Stoichiometry