Preparation of Making 250 mL AgNO3 0,1N from AgNO3 (s)II. DATE OF EXPERIMENT:26th, February 2014
III. OBJECTIVE:To make solution of 250 mL AgNO3 0,1N from AgNO3 (s)
IV. BASIC THEORY:A. The solutions created specifically are:
1. Preparation by mixing 5 ml of bromine in 100 ml of water (carefully). The solution obtained is saturated solution with a concentration of approximately 0.25M.
2. Starch water Preparation is by taking 1g starch and heated with 100 ml of water while stirring. Add a small crystal of iodide so durable solution. 3. Lime water (Calcium Hydroxide) Preparation is by entering into a beaker glass up to as high as approximately 5 cm. Add to full of water, stir and let it settle. After the other part does not fall to the bottom, pour the clear part into the bottle carefully so as not to become turbid, or filtered with cotton.4. Chlorine waterPreparation is by flowing chlorine gas into the water up to a saturated solution (approximately 0.1 M). 5. Sea Water To replace the sea water can be made by mixing a solution of 45 g sodium chloride, 3.5 g of magnesium sulfate. 5 g of magnesium chloride, 2 g of potassium sulfate, 0.2 g of potassium bromide in 2 liters of water. 6. Ammonium Molybdate Preparation is by dissolving 15 g of ammonium molybdate in 10 ml of ammonia 0,880 and 5 ml of water. Dilute to volume to 100 ml, add 100 ml of 5 M nitric acid and stirred slowly. The solution concentration was 0.5 M.
7. Iron (III) chloride To prevent hydrolysis of each 1 liter solution of 0.16 M (0.5 N) iron (III) chloride is added to 40 ml of concentrated hydrochloric acid. 8. Iron (II) Sulfate In making this solution use distilled water newly boil and then cooled so that the solution does not contain dissolved oxygen. 9. Hydrogen Peroxide Preparation is by diluting 100 ml of 10 volume hydrogen peroxide with 90 ml of water. 10. Calcium cyanoferrate (III) Preparation is to wash the crystals with water before it dissolved. Easily decompose during storage. 11. Cyanoferrat Calcium (II) This substance is easily oxidized. Can prevent by inserting a clean iron into solution.12. Crude oil ( crude )Preparation by mixing 35 ml of kerosene, gasoline 20 ml oil 15 ml SAE - 10 , SAE - 50 oil 15 ml, 10 ml gas washing and a bit of tar .13. Silver nitrateUse distilled water to dissolve! Because tap water usually contains less chloride which makes the solution cloudy.14. Barfoed reagentPreparation by mixing 13.3 g of copper ( II ) acetate and 2 ml of glacial acetic acid . Add water up to 200 ml solution .15. Benedic reagentPreparation by mixing 17.3 g of copper ( II ) sulphate crystals , 17.3 g of sodium nitrate and 100 g of anhydrous sodium carbonate . Dissolve in water up to 1 liter of solution .16. Biuret reagentPreparation is by dissolving 0.75 g of crystals of copper (II) sulfate in 1 liter of 2 M potassium hydroxide .17. Millon reagentPreparation is by dissolving 100 g of mercury in 200 ml of concentrated nitric acid by heating in a fume cupboard, cold . Poured 400 ml of water .18. Molisch reagent Preparation is by dissolving 5 ga naphthol in 100 ml of ethanol. 19. Nessler reagent Preparation is by dissolving 35 g of potassium iodide in water. Move this solution into porcelain dash, then add the finely powdered mercury (II) chloride 12.5 g. Crush until soluble. Then pour into a beaker and add a saturated solution of mercury (II) chloride to form a precipitate. Then add 120 g of sodium hydroxide solution and make to 1 liter.20. Schiff reaction Preparation is by dissolving 0.5 g in 500 ml of water Fuhsin. Fade the color solution by flowing sulfur gas.21. Seliwanoff reagentPreparation is by dissolving 0.5 g of resorcinol (1,3-benzene diol) with 1 liter of hydrochloric acid 3 M. 22. Tolens Reagents: (amoniakal silver nitat) Preparation is by adding 3 drops of 2 N NaOH in 5 ml of 0.2 M silver nitrate, ammonium hydroxide is then added to a solution right away. 23. Tin (II) chloride Preparation is by heating 11.3 g of tin chloride in 20 ml of concentrated hydrochloric acid, add a few small pieces of tin, then add water until the volume of solution to 100 ml. The solution concentration was 0.5 M (1 N).
24. Acetate lead Preparation is by adding a solution of potassium iodide to a solution of lead asetatencer to prevent hydrolysis and maintain the clarity of the solution. 25. Yod (Lugol) Preparation in a solution of potassium iodide for iodine soluble in water. Preparation is by dissolving 12.7 g of iodine and 20 g of potassium iodide in 100 ml of water.
B. Indicator 1. Phenolphtalein (PP) Preparation is by dissolving 1 g of solid PP in 250 ml of ethanol, then a solution made by adding 500 ml of water. Route from 8.4 to 10.0 colorless color change from purple to red. 2. Methyl Orange (MO) Preparation is by dissolving 1 g of the solid in 500 ml of alcohol 95%. Change colors: Red-Yellow. Route : pH 2.8 to 4.6.3. Litmus Preparation is by heating 10 g Litmus (azolitmin) with 500 ml of water for about half an hour. Allow the solution to stand for 2 hours, then filtered. If you need the color purple solution made by adding a few drops of dilute nitric acid. Litmus solution should be stored in a jar with a lid loosely so air can enter. Because if no solution can be easily damaged air. 4. Methyl Red (MM) Preparation is by dissolving 1 g of the solid in 500 ml of alcohol 95%. Changes in red color - yellow. Route pH 4.4 to 6.0. 5. Yamada Universal Indicator Preparation by mixing 0.25 g Bromtimol blue), 025 g Thymol blue, 0.0625 g of methyl red, and 0.5000 g Phenolphtalein. Then the mixture was diluted with 500 mL of ethanol, and then dilute the solution with water to a volume of 1 liter.
6. Buffer solution Buffer solution is a solution if the concentration of hydrogen ions or hydroxyl ions added, the pH of the solution does not change. A system typically consists of a buffer solution of a weak base and a salt of the base. Buffer solution with a pH between 2.2 to 8.0 To make 100 ml of buffer solution, add 0.2 M Na2HPO4 at 0.1 M citric acid with a ratio:
pHNa2HPO4 (ml)Citric acid (ml)pHNa2HPO4 (ml)Citric acid (ml)
Material Safety Data SheetSilver nitrate MSDSSection 1: Chemical Product and Company IdentificationProduct Name: Silver nitrate
Synonym: Lunar caustic; Silver (1+) nitrate; Nitric acid, silver (1+) salt
Chemical Name: Silver Nitrate
Chemical Formula: AgNO3Section 2: Hazards IdentificationPotential Acute Health Effects:Very hazardous in case of skin contact (irritant), of ingestion. Hazardous in case of skin contact (permeator), of eye contact (irritant), of inhalation. Slightly hazardous in case of skin contact (corrosive). The amount of tissue damage depends on length of contact. Eye contact can result in corneal damage or blindness. Skin contact can produce inflammation and blistering. Inhalation of dust will produce irritation to gastro-intestinal or respiratory tract, characterized by burning, sneezing and coughing. Severe over-exposure can produce lung damage, choking, unconsciousness or death. Prolonged exposure may result in skin burns and ulcerations. Over-exposure by inhalation may cause respiratory irritation.
Potential Chronic Health Effects:CARCINOGENIC EFFECTS: Not available. MUTAGENIC EFFECTS: Not available. TERATOGENIC EFFECTS: Not available. DEVELOPMENTAL TOXICITY: Not available. The substance is toxic to lungs. The substance may be toxic to mucous membranes, skin, eyes. Repeated or prolonged exposure to the substance can produce target organs damage. Repeated exposure of the eyes to a low level of dust can produce eye irritation. Repeated skin exposure can produce local skin destruction, or dermatitis. Repeated inhalation of dust can produce varying degree of respiratory irritation or lung damage.
Section 3: First Aid MeasuresEye Contact:Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Cold water may be used. Get medical attention.
Skin Contact:In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Cover the irritated skin with an emollient. Cold water may be used.Wash clothing before reuse. Thoroughly clean shoes before reuse. Get medical attention immediately.
Serious Skin Contact:Wash with a disinfectant soap and cover the contaminated skin with an anti-bacterial cream. Seek immediate medical attention.
Inhalation:If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical attention.
Serious Inhalation:Evacuate the victim to a safe area as soon as possible. Loosen tight clothing such as a collar, tie, belt or waistband. If breathing is difficult, administer oxygen. If the victim is not breathing, perform mouth-to-mouth resuscitation. WARNING: It may be hazardous to the person providing aid to give mouth-to-mouth resuscitation when the inhaled material is toxic, infectious or corrosive. Seek immediate medical attention.
Ingestion:Do NOT induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. If large quant