mixture that consisted of 50% benzoic acid‚ 40% benzoin‚ and 10% dibromobenzene. The benzoic acid was extracted by the use of base and extraction technique. Then a crystallization was performed in order to separate benzoin by the use of hexane a solvent‚ leaving the dibromobenzne in the mother liquor. The percent recovery for benzoic acid was 91.8% and 80.3% for the benzoin. The MP for benzoic acid was 119-122°C (1) and 135-136°C (2)for the benzoin. The high percent recovery and closeness of measured
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interpretation of solubility * solubility rules * Precipitation Reactions * Determining reaction products * Following Solubility rules * Molecular Formula‚ Total ionic formula‚ net ionic formula * Acid-Base Reactions * Oxidation-Reduction reactions
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9 Oxidation and reduction A complete set of fully worked solutions is contained in the Chemistry for WA 2 Solutions Manual. Review Exercise 9.1 1 a Redox reaction b Not a redox reaction c Redox reaction d Redox reaction 2 a Oxidation: Fe(s) Fe2+(aq) + 2e– Reduction: Ag+(aq) + e– Ag(s) Overall equation: Fe(s) + 2Ag+(aq) Fe2+(aq) + 2Ag(s) b Oxidation: Mg(s) Mg2+(aq) + 2e– Reduction: Cu2+(aq) + 2e– Cu(s) Overall equation: Mg(s) + Cu2+(aq) Mg2+(aq) + Cu(s) c No reaction.
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element is reduced in the following reaction? Slect your reaction Zn(s) + 2 HCl(aq) Zn is oxidized (0 Fe2O 3(s) + 2 Al(s) Fe is reduced (3+ ZnCl 2(aq) + H 2(g) 2+) and H is reduced (+1 ÷ 0) 2 Fe(s) + Al2O 3(s) 0) and Al is oxidized (0 ÷ 3+) 14 HNO3 + 3 Cu2O 6 Cu(NO3)2 + 2 NO + 7 H2O N is reduced (5+ 2+) and Cu is oxidized (1+ ÷ 2+) I–– + 2 MnO4– + H2O IO3– + 2 MnO 2 + 2 OH–– I is oxidized (1–– 5+) and Mn is reduced (7+ ÷ 4+) MULTIPLE CHOICE. Choose the one alternative that best completes the
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concentrated nitric(v) acid and concentrated sulphuric acid at 55 °C: Yellow oil with bitter almond smell produced benzene NO2 + HNO3 (HONO2) Alkylbenzenes – CH3 CH3 + H2O Add alkaline KMnO4 and boil: Decolourisation of KMnO4; brown precipitate of MnO2 formed ⎯ CH3 + 3[O] methylbenzene H2SO4 ⎯ COOH + H2O Comment Oxidation of the side chain is more effective in alkaline than acidic conditions. Haloalkanes R–X where R is an alkyl group; X is Cl‚ Br or I
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Good Practice Guidance and Uncertainty Management in National Greenhouse Gas Inventories N2O EMISSIONS FROM ADIPIC ACID AND NITRIC ACID PRODUCTION A C K N O WL E D G E M E N T S This paper was written by Heike Mainhardt (ICF Incorporated) and reviewed by Dina Kruger (USEPA). ABSTRACT Nitrous oxide (N2O) is generated as a by-product during the production of adipic acid and nitric acid. The main use for adipic acid is as a component of nylon-6/6; thus production trends are closely correlated
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The progress of the reaction was monitored in my case using two TLC plate. It first started off with the spotting of Standard benzoin and benzil which were provided in the lab and followed by the addition of the reaction mixture at once it starts changing colour/boiling‚ then at 10 and 20 mins into the reflux. Once all the necessary steps were spotted‚ the TLC plate was placed in in a beaker containing CH₂Cl₂(methylene chloride)‚ which was used as the developing solvent in this experiment. To check
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Santo Tomas‚ Manila ABSTRACT The unknown hydrocarbon sample was differentiated and characterized by the use of three tests. The outcomes of these tests are as follows: Nitration test (negative)‚ Bromine test (positive) and Basic Oxidation test (positive). From these results the unknown sample can be classified as non-aromatic and unsaturated. INTRODUCTION Hydrocarbons are organic compounds that consist of only C and H atoms. They include the alkanes‚ alkenes‚ alkynes‚ and aromatic
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GENERAL CHEMISTRY Laboratory Guide This module provides a laboratory guidelines‚ safety declaration form‚ Lab Report guidelines and Laboratory manual for subject of General Chemistry (CLD 10004). Mohd Zulkhairi Abdul Rahim Laboratory Information Before each lab session‚ you should prepare by reading the lab manual and the textbook required reading. We expect you to have a good understanding of the purpose‚ details of the procedure‚ the use of all chemicals and any significant hazards
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(1867) Theoretische Betrachtungen und deren Anwendungen zur Systematik der organischen Chemie (Theoretical considerations and their applications to the classification scheme of organic chemistry)‚ Freiburg‚ Germany‚ p [24] Dewar‚ James (1867) "On the oxidation of phenyl alcohol‚ and a mechanical arrangement adapted to illustrate structure in the non-saturated hydrocarbons‚" (http:/ / books [25] Ladenburg‚ Albert (1869) "Bemerkungen zur aromatischen Theorie" (http:/ / books. google. com/ books?id=Epg8AAAAIAAJ&
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