of the tube containing HCL with a large molecular weight. In agar-water gel test‚ using agar plate and agar-water gel‚ 2 different substrate were tested- potassium permanganate (KMnO4) and methylene blue (C16H18N3SCl). By dropping it on a agar plate‚ methylene blue has a slowest diffusion rate and large molecular weight than potassium permanganate. Thus‚ the greater the molecular weight‚ lesser the rate of diffusion. INTRODUCTION Diffusion is a passive transport. It is results from
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Noah Stewart-Maddox Chem 121 10/12/11 Synthesis of Potassium Ferric Oxalate Trihydrate and The Determination of Oxalate Ion in Ferric Oxalate Trihydrate using Titrimetry Abstract: In this two-part lab‚ we will learn about coordination compounds and their uses with stoiciometry. We will also find out about how theoretical yield is calculated from a reaction we will create. We will also synthesize Potassium Ferric Oxalate Trihydrate (K_3 [〖Fe(C_2 O_4)〗_3]•3H_2 O) using a two step reaction. In
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Jay Patel 10/21/11-10/21/11 Lab Partners: Isha Dihora‚ Shivandu Patel‚ Dilan Kapadia Standardizing a Solution of Potassium Hydroxide Abstract: In this lab‚ a prepared solution of Potassium Hydroxide will be standardized. The solution we will be standardized by performing multiple calculations to ensure the upmost accuracy. The acid used for this titration will be KHP (C4H5KO4). Phenolphthalein we be added to the beaker of the dissolved acid before the titration will be added. The titration
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ketone with household bleach. The product is then isolated by steam distillation and is extracted into the distillate with ether. After the removal of ether‚ it leaves the product cyclohexanone. In experiment 6‚ cyclohexanone is oxidized by potassium permanganate. Manganese dioxide is filtered off and the filtrate is concentrated‚ acidified with hydrochloric acid and then cooled to yield crystalline adipic acid. OBJECTIVE: Experiment 4: To recover cyclohexanone from the oxidation of cyclohexanol
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secondary‚ and tertiary alcohols with acid and with an oxidizing agent. Materials chemical safety goggles lab apron protective gloves test-tube rack eyedropper dropper bottles containing butan-1-ol butan-2-ol 2-methylpropan-2-ol potassium permanganate solution‚ KMnO4 (aq) (0.01 mol/L) concentrated hydrochloric acid‚ HCl (aq) (12 mol/L) (for teacher use only) Procedure 1) Put on your safety goggles‚ apron‚ and protective gloves. 2) Put 3 test tubes in a test-tube rack. From the
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oxidation numbers for sulfur in the species below. S2O32– (ii) S SO2 . Assessor’s use only Write balanced half-equations for the oxidation and reduction reactions. Oxidation Reduction (b) Oxalic acid (H2C2O4) reacts with acidified potassium permanganate solution (MnO4– / H+). (i) Describe what would be observed. (ii) Write balanced half-equations for the oxidation and reduction reactions‚ and then write a balanced equation for the overall reaction. half-equation half-equation
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The next test was the agar-water gel test. It was composed of a petri dish of agar-water gel with three wells. A drop of potassium permanganate‚ potassium dichromate‚ and methylene blue were introduced to the three wells simultaneously. The diameters of the three substances were measured after a regular 3 minute interval for 30 minutes. Results showed that potassium permanganate‚ which is the lightest‚ have the fastest diffusion rate while methylene blue‚ the heaviest‚ have the slowest diffusion rate
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oxidation-reduction reaction between analyte and titrant (Harris‚2009). It involves the transfer of electrons between the two solutions. This experiment aims to determine the amount of iron or iron content of a razor blade by redox titration using potassium permanganate as a titrant and a self-indicating agent. Blank titration is used to estimate the titration error. Proper techniques and calculation regarding blank titration is also shown. This experiment will help the students to learn the proper conduction
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UNIVERSITY OF ZIMBABWE Programme Bscd (ІІ) Course CH202 Practical Number 4 Title d-block elements- Manganese AIMS /OBJECTIVES * To understand the reactions of manganese * To prepare Mn(acac)3 and calculate percentage yield * To calculate the percentage of Mn and acetyl acetone
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Determination of the Composition of Cobalt Oxalate Hydrate Experiment 12 Robbie Kinsey Partner: Debnil Chowdhury Chem. 1312-D TA’s: Russell Dondero & Sylvester Mosley February 9‚ 2000 Purpose The purpose of this lab was to determine the percent cobalt and oxalate by mass‚ and with that information‚ the empirical formula for cobalt oxalate hydrate‚ using the general formula Coa(C2O4)b.cH2O. Procedure The powdered cobalt oxalate
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