plates. If the positive metal ions in the solutions are less powerful reducing agents‚ then the metal in the plate will be reduced and hence form a deposition of solid metal. e.g. Zn + Pb2+-> Zn2+ + Pb EXPERIMENT 2: Aim: To range the halogens bromine‚ chlorine and iodine‚ with the strongest oxidising agent first. Hypothesis: A strong oxidising agent is a species that easily gains electrons‚ and is hence easily reduced. The ionisation energy of the halogens (Cl2‚ I2‚ Br2) decreases down the group
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alkenes Aim: To compare the reactivities of an alkane and an alkene with bromine water and a solution of potassium permanganate (KMnO4). Equipment: • 4 test tubes • Test-tube rack • 4 pipettes Safety: safety glasses must be worn to prevent injury to the eyes. Ensure room is well ventilated whilst using the hydro carbons. Method: 1. Place 1 ml of sample A (cyclohexane) into a test tube containing 4 mls of the bromine water solution. Record observations of any reaction. 2. Place 1 ml of sample
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There are three reactions in the iodine clock reaction. The first reaction is IO3-(aq) + 3 HSO3-3 SO4-(aq) + I-(aq)+ 3 H+(aq)‚ where the iodate ions become iodide ions1. The second reaction is 6 H+(aq) +IO3-(aq) + 5 I-(aq) 3 I2(aq) + 3 H2O(l) where the iodate ions become molecular iodine2. The third reaction involves molecular iodine becoming a dark blue starch;I2(aq) + starch blue-black complex3. These three reactions react in a sequence. In any reaction the concentration is exponentially related
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identification of alkyl halide Chemicals and Apparatus: ~18.0 g 1-butanol‚ ~20.0 g sodium bromide‚ 15 ml of concentrated sulfuric acid‚ anhydrous magnesium sulfate‚ ~10 ml of 5% aqueous sodium bicarbonate‚ ~1 ml of sodium iodide – acetone reagent‚ 1 ml of bromine in chloroform‚ 1 piece of 100 cm3 round-bottomed flask‚ 1 piece of 50 cm3 of beaker‚ 1 piece of 50 cm3 of conical flask‚ 1 piece of 250 cm3 of separating funnel‚ 1 piece of 10 cm3 of measuring cylinder‚ 1 piece of electronic hot plate‚ oil bath‚ several
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with zinc and acetic acid‚ C yields only: O O The structure of C is: I II IV A) B) C) D) E) III V I II III IV V Ans: E Topic: Structure Elucidation 4. Compound X has the molecular formula C6H10. X decolorizes bromine in carbon tetrachloride. X also shows IR absorption at about 3300 cm-1. When treated with excess hydrogen and a nickel catalyst‚ X yields 2-methylpentane. The most likely structure for X is: A) B) C) D) E) Ans: D 243 Keghan Chapter
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EXPERIMENT 8 – Reactions of Hydrocarbons Properties and Identification of Hydrocarbons Purpose: a) To identify saturated and unsaturated hydrocarbons using properties and reactions. b) Study substitution and addition reactions. Equipments test tube rack (1) test tube holder (2) 100 mL beaker medium test
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Title of Experiment: An Activity Series Lab MSDS: Copper‚ Cu(s) Stability- Stable. Incompatible with strong acids‚ active halogen compounds‚ chlorine‚ fluorine‚ iodine‚ bromine‚ ammonia. May react explosively with strong oxidizing agents. Toxicology-Dust may cause respiratory irritation. Personal Protection- Suitable ventilation if handling powder. Zinc‚ Zn(s) Stability-Stable. Incompatible with amines‚ cadmium‚ sulfur‚ chlorinated solvents‚ strong acids‚ strong bases. Air and moisture
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Going back to our reaction mechanisms‚ we were looking at SN1 and SN2 reactions‚ so we of course used the hydrobromic acid as our acid catalyst which would be protonating the hydroxyl group of our butanol‚ to make a better leaving group‚ so that the bromine radical would be able to attack the leftover carbocation. Our group used 2-bromobutanol and we expected‚ from our mechanism‚ to achieve 2-bromobutane and when we compared our GC results to the prepared sample‚ our mechanism proved to be true. We did
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INORGANIC CHEMISTRY 1 Lab Report on Oxidation & Reduction I. Metal-Metal Ion Displacement II. Halogen Displacement Reactions INTRODUCTION A series of experiments had been conducted to determine the order of displacement strengths of the metals and halogen chosen for the experiments. A displacement reaction is a reaction in which one element(metal or non-metal) displaces another element(metal or non-metal) from its salt solution. In the displacement reaction of metals‚ the more
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Maggie Mitchell IB Chemistry Prd. 5 THE HALOGENS LAB Date: 9/11/13 Purpose: The purpose of this experiment was to observe and record the halogens’ (NaF‚ NaCl‚ NaBr‚ and KI) reactions with the chemicals Ca(NO3)2‚ AgNO3‚ and NH4OH and use these observations to identify an unknown halogen. Data: (see next page) TABLE 1: REACTIONS OF HALOGENS WITH CA(NO3)2‚ AGNO3‚ AND NH4OH REACTION NAF NACL NABR KI REACTION W/ CA(NO3)2 solution turns cloudy and precipitate forms clear precipitate
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