Redox Titration Lab ABSTRACT: In this lab‚ 0.010 M purple-colored potassium permanganate solution was standardized by redox titration with iron (II) ammonium sulfate hexahydrate (FAS). The average mass of the three flasks of FAS was 0.483 grams. Once the concentration of the standard solution of KMnO4 (aq) was determined‚ it was used to determine the concentration of Fe2+ in iron pills. On average‚ there was 0.01813 L of solution used. With this information and the balanced net-ionic equation
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which is about 0.5% it also contains 0.52& to 1.81 citric acid and only a trace of oxalic acid is present. These acids in tomatoes‚ in combination with sodium and potassium either form sodium or potassium acid malate‚ citrate or oxalate. Their end products when oxidized in the body are carbon dioxide‚ water and the carbonates of potassium and sodium. The latter has alkaline reaction. Tomatoes thus leave an alkaline ash in the process of oxidized by the body. This increases the alkalinity of the blood
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= 2.8g = 0.1N | Hydrochloric acid HCl‚ FW = 36.5‚ Density = 1.2 1M = 83mls = 1N (Use 86mls) 250ml 0.1M = 2mls = 0.1N 1 liter 0.1M soln = 8.6mls = 0.1N | Oxalic acid H2C2O4.2H2O‚ FW = 126.07‚ Eq. = 63g/l 250ml 0.05M = 1.575g = 0.1N | Potassium hydrogen phthalate KH(C8H4O4)‚ FW = 204.23‚ Eq. =204g/l 250ml 0.1M = 5.105g = 0.1N | Potassiun hydrogen iodate KH(IO3)2‚ FW = 389.92‚ Eq. 73.07g/l 250ml 0.1M = 9.75g = 0.1N | Sodium carbonate Na2CO3‚ FW = 106‚ Eq. =53g/l 250ml 0.05M = 1
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what would be observed; and (ii) write an appropriate equation. (a) adding excess sodium sulphite solution to iodine solution (b) adding aqueous chlorine to potassium bromide solution (c) adding excess potassium iodide solution to acidified potassium permanganate solution 1 (d) adding excess iron(II) sulphate solution to acidified potassium dichromate solution (e) adding concentrated nitric acid to magnesium ribbons (f) (g) (h) (i) (j) (k) (l) (m) (n) 5. adding dilute nitric acid to zinc granules
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005m | 12in | 0.33yd | Lab. Manual: Length | 271cm | 2.71m | 10.20in | 0.28yd | Lab. Manual: Width | 208cm | 2.08m | 8.60in | 0.24yd | B. Graduated Cylinder Volume reading when graduated cylinder is half filled with | (mL) | Potassium permanganate(KMnO4) | 12.6mL | Distilled Water (H2O) | 12.3mL | | Capacity of Apparatus (maximum volume contained) | Big test tube | 18.8mL | 250-mL Beaker | 50mL | C. Pipette Pipettes | Drawing of a part of the scale | Accuracysmallest
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spectrum of methyl orange Aim To prove beer lamberts law Introduction This experiment is to prove Beer lamberts law‚ which states that absorbance is proportional to concentration. Part one materials 1. Colorimeter 2. Methyl orange 3. Potassium permangate 4. Cuvette 5. Deionised water Part one methods 1. Rinse one cuvette with deionised water 2. Fill one cuvette with deionised water and “zero” the colorimeter machine 3. Fill the cuvette that was rinsed with 4ppm Methyl
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sulfuric acid (H2SO4) to the potassium manganite solution. Potassium manganate (VII) solution is used as a standard solution for oxidation and during redox titration. Potassium manganate(VII) is a self-indicator so other indicators are not required. The manganite is reduced from +VII in MnO4- to +II in Mn2+. The sulfuric acid (H2SO4) reacts with the paper clip. By heating up the sulfuric acid the paper clip dissolves‚ and iron (II) ions are oxidized to iron (III) ions by potassium manganate (VII). When
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Aluminum (III) Bromide 9 KMnO4 Potassium Manganate (VII) 10 Cu(OH)2 Copper (II) Hydroxide 11 FeSO4 Iron (II) Sulfate 12 NH4Cl Ammonium Chloride 13 ZnCO3 Zinc Carbonate 14 SnF2 Tin (II)Fluoride 15 MgSO4 Magnesium Sulfate 16 MnO2 Manganese (IV) Oxide 17 Ca3(PO4)2 Tricalcium Phosphate 18 NaOH Sodium Hydroxide 19 HCl Hydrogen Cloride 20 Ba(HSO3)2 Barium Bisulfite 21 HNO3 Hydrogen Nitrate 22 FeSO3 Iron (II) Sulfite 23 Al2S3 Aluminum Sulfide 24 KNO3 Potassium Nitrate Part B Write the
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Observe and record the results. For Diffusing part‚ place a small beaker of water in a place where it will not be disturbed. Then drop one small crystal of potassium permanganate into the beaker and record the appearance. For Recrystallization part‚ place approximately 5-7 grams of sodium thiosulfate in a test tube and heat the mixture the solid appears to melt. Then allow the solution to cool to room temperature.
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He a lt h 0 3 2 3 Fire 0 Re a c t iv it y 2 P e rs o n a l P ro t e c t io n Material Safety Data Sheet Sulfuric acid MSDS Section 1: Chemical Product and Company Identification Product Name: Sulfuric acid Contact Information: Catalog Codes: SLS2539‚ SLS1741‚ SLS3166‚ SLS2371‚ SLS3793 CAS#: 7664-93-9 Sciencelab.com‚ Inc. 14025 Smith Rd. Houston‚ Texas 77396 RTECS: WS5600000 US Sales: 1-800-901-7247 International Sales: 1-281-441-4400 TSCA: TSCA
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