"Nahco3 and hcl" Essays and Research Papers

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    Synthesis of an Alkyl Halide

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    compounds as reactants. One of the simplest method used is the addition of a hydrogen halide to an alcohol. In this research‚ tert-butyl alcohol was reacted with cold concentrated HCl to produce tert-butyl chloride. The crude product was distilled to yield a pure tert-butyl chloride. The tert-butyl alcohol‚ together with HCl‚ underwent an SN1 nucleophilic substitution reaction‚ which is composed of three steps—(1) propanation of alcoholic oxygen‚ (2) formation of carbocation‚ and (3) attacking of the

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    drops of one chemical then two drops of a different chemical. Observation: NaHCO3 and HCl - Clear bubbles; bubbles did not fizz. HCl and BTB- Color changes to orange after the BTB is added. NH3 and 1 drop of BTB- Turned dark blue. HCl and Blue Dye - Turned dark blue Blue Dye and NaOCl- Turned dark blue then aqua blue. NaOCl and KI- Turned yellow. KI and Pb(NO3)2- Cloudy yellow. NaOH and phenolphthalein- Dark pink. HCl and phenolphthalein- Clear w/ No bubbles. NaOH and AgNO3 – Olive green.

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    1 – Chemical Reactions Well Chemicals Observations Chemical Change? NaHCO3 + HCl Nothing occurred it remained the same. No NaOCl + KI Observation 1: It turned brown‚ but had no odor. Yes NaOCl + KI + starch Observation 2: It turned ark purple‚ but had no odor. Yes KI + Pb(NO3)2 It turned bright yellow and formed pieces of solid in the bottom. Yes NaOH + phenolphthalein It had a light odor and turned pinkish red. Yes HCl + phenolphthalein Nothing occurred it remained the same with a slight

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    Chemical Reaction Lab

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    The exact time was noted for each the sample mixes with the quenching NaHCO3. In order to ensure complete quenching the mixtures in the flasks were swirled again‚ without stopping the clock. Finally‚ using the burette filled with the solution of Na2S2O3 the contents of each of the flasks T3 to T7 were titrated and a starch

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    Report

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    EXPERIMENT-1 CHEMICAL REACTIONS AIM: To perform and observe the following reactions and classify them into: (i) Combination reaction (action of water on quick lime) (ii) Decomposition reaction (action of heat on ferrous sulphate crystals) (iii) Displacement reaction (iron nails kept in copper sulphate solution) (vi)Double decomposition reaction (reaction between sodium sulphate and barium chloride) APPARATUS REQUIRED: 1. A rack of at least six clean test tubes and a boiling

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    Chemical Changes Lab

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    Observations of Chemical Reactions | Well #/Question: | Chemicals: | Reaction: | A-1/A | NaHCO3 andHCL - CO2 | Substance bubbled‚ releasing Carbon Dioxide | A-2/B | HCl andBromthymol Blue | Substance turned a yellowish-orange color |

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    ANTACIDS- Classification and Mechanism of Action INTRODUCTION Antacids are defined as a substance‚ generally a base‚ which counteracts stomach acidity. The name antacid means anti-acid (against acid). Antacids are the primary treatment for ailments such as gastric reflux‚ gastritis‚ upset stomach and heartburn. Hydrochloric acid is secreted by the stomach to kill harmful organisms‚ aid digestion and activate digestive enzymes. Excess secretion of acid into stomach or impaired resistance by

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    a pipet two drops each chemical was deposited into the 24-well plate. The chemical mixtures are noted below in the Data Tables. Data Tables and Observations Question/ Well Number Chemicals Reactions/Observation A / A1 NaHCO3 and HCL-CO2 Formation of gas bubbles were immediate and consistent for some time. No color change‚ clear. Easier to see under black paper. B / A2 HCI and BTB After adding BTB the color automatically changed to a copper color. The color was

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    Chemical Changes Lab

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    | Reaction | White paper | Dark paper | A1 | NaHCO3 and HCl-CO2 | Bubbles formed from CO2 emissions | Clear solution | Clear Solution | B1 | HCl and BTB | Solution changed from clear to orange | Orange solution | Orange solution | C1

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    materials: 0.20 M HCl solution‚ 0.20 M NaOH solution‚ 50 ml burette‚ bromophenol blue‚ 150 ml flask‚ electronic scale‚ tripod stand‚ motor and pestle‚ Bunsen burner‚ Tums tablet‚ Rolaid tablet‚ and Equate tablet. 2. Weigh antacid tablet as a whole on the electronic scale and record the data. 3. Break up the antacid tablet with the motor and pestle and weight it‚ ensure that it weighs between 0.80 and 1 gram and record the weight of the sample. 4. Add 50 ml of 0.20 M HCl solution to the

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