Classification for Functional Groups Alcohols Lucas test (Differentiates primary‚ secondary‚ and tertiary alcohols) Reagent: ZnCl2 in conc. HCl Observation: Rate of reaction (tertiary alcohol> secondary alcohol> primary alcohol) Procedure: 2mL Lucas Reagent in test tube+ 3-4 drops of alcohol‚ stopper‚ shake vigorously‚ NOTE time required (less than 10m mins only) to form an emulsion or separate layers. Oxidation (Confirms if alcohol is oxidizable: presence of H in C-OH bond) Reagent:
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Results: For the solutions acid and bases lab the results my group received are as followed. Procedure 5.1 were we had to measure the ph of the following substances Vinegar 4 Apple Juice 4 Black coffee 5 Baking Soda + Sprite 8 0.01mM HCl 4 0.1mM HCl 3 Distilled water 4.5 Tap Water 5 Procedure 5.2 -Test the ability of buffers Before Buffer After Buffer Water 4 Water 4 0.1M phosphate buffer 6.5 0.1M Phosphate buffer 6.9 0.1M NaCl 4 0.1M NaCl 4.8 Procedure 5
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Week-2-Solubility Name: ___________________________________________________ Section: ______________ For Instructor Use Only POST-LAB REPORT FOR THE SOLUBILITY EXPERIMENT I) Conclusion: Write the conclusions regarding your observations and results obtained from each part 2A‚ 2B‚ 2C
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Joshua McMahon IB Chemistry Matt Chase 3A 11/5/14 Finding the Molar Enthalpy Change of sodium bicarbonate by using Hess Law Research Question By using Hess’ Law‚ can the Molar Enthalpy Change of sodium bicarbonate be calculated? Hypothesis If we are attempting to determine the enthalpy change of the thermal decomposition of Sodium Bicarbonate‚ then Hess’s Law will be will be the most effective. Introduction Sodium bicarbonate‚ more commonly known as baking soda‚ has many uses in todays
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Electrolytic Conduction Introduction Electrical conductors can be classified into two types: (1) electronic conductors and (2) electrolytic conductors. Solid and molten metals‚ semiconductors‚ and some salts are examples of electronic conductors. Conduction takes place in electronic conductors by direct migration of electrons through the conductor under the influence of an applied potential. Here the atoms or ions that compose the conductor remain stationary (except for vibrations about
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dissolved in acetic acid‚ and two with 10 grams of solid sodium acetate dissolved in acetic acid. These are split into two groups of five containing one of each solution. The pH of each solution is then measured and a pipette is used to distribute 1 mL of HCl‚ a strong acid‚ at a time to each solution in the first set‚ with the pH being measured and recorded until a drastic change is recorded. The procedure will be repeated with the other set of solutions using NaOH‚ a strong base. I would predict that
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in the reaction. Independent variable: The number of moles of the reactants Dependent Variable: The limiting reagent Constant Variable: The volume of reactants added Equipment: 2 100 ml beaker 2 measuring cylinders 10 ml of 0.1 molL-1 HCL(aq)‚ NAOH(aq) 20 ml of 0.1 molL-1H2SO4(aq)‚ CuSO4(aq) 30 ml of 0.1 molL-1 Ba(NO3)2(aq) Universal indicator Filter Paper Funnel 4 test tubes Reaction A- Method: 1) Measure 10 ml of 0.1 molL-1 of Hydrochloric Acid using a measuring
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MATERIALS: 0.24 M sodium thiosulfate‚ Na2S2O3(aq)‚ 6.0 M hydrochloric acid‚ HCl(aq)‚ 2-1x8 (or 1x12) well Titertek strips‚ 4-micro-tip 1 mL Beral pipets‚ timer‚ cotton swabs‚ 24-well reaction plate‚ permanent marking pen PROCEDURE: 1. Practice adding water and starting the timer until you have mastered the technique. See the attached Titertek procedure sheet. Label three 1 mL Beral pipets for thiosulfate‚ S2O32-(aq)‚ hydrochloric acid‚ HCl(aq)‚ and water‚ H2O. Fill one well in a 24-well reaction plate with
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SUPPLEMENTARY MATERIAL I Unit V: States of Matter 5.7 KINETIC ENERGY AND MOLECULAR SPEEDS Molecules of gases remain in continuous motion. While moving they collide with each other and with the walls of the container. This results in change of their speed and redistribution of energy. So the speed and energy of all the molecules of the gas at any instant are not the same. Thus‚ we can obtain only average value of speed of molecules. If there are n number of molecules in a sample and their individual
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Brønsted–Lowry definition‚ which species can function both as an acid and as a base? (A) Cl– (B) SO42– (C) NH4+ (D) HCO3– (E) H3O+ 2. Which of the following species can function as both a Brønsted-Lowry acid and a Brønsted-Lowry base in water? (A) HCl (B) HPO42- (C) NH2– (D) H3O+ (E) NaOH 3. In this reaction‚ CH3COOH + H2O H3O+ + CH3COO–‚ which substances are bases according to the Brønsted–Lowry definition? (A) CH3COOH and H2O (B) CH3COOH and CH3COO- (C) H2O and CH3COO– (D) H3O+ and CH3COO–
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