vinegar Phenolphthalein wash bottle of pure water Two 100mL or 150mL 250mL beaker 100mL volumetric flask with stopper 50mL buret 10mL volumetric pipet pipet bulb ring stand buret clamp stirring rod small funnel two 250mL Erlenmeyer flasks meniscus finder Procedure: 1. 10mL of vinegar was obtained in a clean‚ dry 100mL beaker. 2. One 10.00mL portion was pipeted into a clean 100mL volumetric flask and dilute to the mark. 3. The mixture was mixed by stopper and inverts it. 4. 50mL of NaOH(aq)
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spatula 6 125-mL Erlenmeyer flasks Size 2 rubber stopper Stirring rod 10-mL graduated cylinder 25-mL beaker Procedures: 1.) Measure out 5 mL of NaClO into a 125-mL Erlenmeyer flask 2.) Add 95 mL of distilled water to the flask 3.) Mass out 2 g of solid KI 4.) Transfer 25 mL of the diluted NaClO in the flask to another 125-mL Erlenmeyer flask 5.) Repeat step 3 and 4 for two more times 6.) Label the flask: Trial 1‚ Trial 2‚ Trial 3 7.) Add 2 g of solid KI to the Trial 1 flask 8.) Swirl the
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finely powdered potassium hydrogen tartrate into 250.mL beaker. (2) Add 150.mL of distilled water and stir well. (3) Using a vacuum filtration‚ filter the solution into a clean‚ dry Erlenmeyer flask with a side arm. (4) Record the temperature of the filtrate. (5) Pipet out 25 mL of (4) into a 250.mL Erlenmeyer flask. (6) Put ~3 drops of phenolphthalein indicator to (5) (7) Prepare a buret with ~0.04M NaOH solution. (Make sure to write down the actual concentration.) (8) Titrate (7) with NaOH
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deionized water in your plastic bottle. Make to to shake the bottle to dissolve the salt. 2. Obtain a 250-mL Erlenmeyer flask and transfer a 10 mL of CaCO3 using a buret into the flask. 3. Measure 30 mL of deionized water and add it into the titration flask. 4. Make sure to stir the solution 5. Inside a fume hood‚ add 3mL of ammonia/ammonium chloride buffer (pH10) into the flask and stir for another 30 seconds. 6. Add four drops of Eriorchrome Black T indicator solution. Stir for
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800 mL of water with 4.2 mL of 19.1 M NaOH‚ the diluted solution of NaOH was poured in a buret until the initial volume on the buret was 30.00 mL. 0.3005g of KHP was dissolved in 40.0 mL of 50% ethanol‚ and a drop of indicator was added to the Erlenmeyer flask containing the KHP solution. When the titration of KHP solution with NaOH reached its endpoint‚ pale pink color was observed‚ the final volume of NaOH in the buret‚ 45.00 mL‚ was recorded. Based on the data obtained and the equivalent weight
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Introduction: The objective of this experiment is to utilize the techniques of weighing and titrating to determine the total amount of MgSO4 present in an unknown sample. Standardized EDTA will be used to titrate the unknown solution. This type of reaction is a complexation reaction‚ which usually involves Lewis acids and bases. EDTA in complexation reactions serves as a chelating ligand. The base‚ EDTA‚ will bind to the metal ions‚ which serve as the Lewis acid‚ thus playing a role as a ligand
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Volumetric Flasks; one 50 mL flask‚ and one 100 mL flask * 2- Scoopulas * 10- Weigh Boats * 5- Filter paper * 5- 250 mL beakers * 2- 25 mL pipets * Distilled water * 2- 100 mL Erlenmeyer flasks * 2- glass funnels Procedure: 1. To the best of your ability‚ weigh out 3.75 grams of BaCl2 and 6.125 grams of AgNO3 on separate weigh boats 2. Pour the BaCl2 into the 50 mL volumetric flask from the weigh boat 3. Then add 14 mL of water to the flask to make the
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this study was conducted by the researchers by using garlic and black pepper after they found out that these materials have the ability to control pests. The materials were 2 whole garlic‚ 40 grams of black pepper‚ 600 ml of water‚ beaker‚ Erlenmeyer flask‚ tripod with wire gauze‚ alcohol lamp with denatured alcohol‚ mortar and pestle‚ knife‚ chopping board‚ 4 spray containers‚ and 150 pests. There were five treatments tested with three replicates each. Treatment A (garlic only); treatment B (black
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Exploring Rates‚ Equilibrium‚ and Organic Chemistry Brandon Sher SCH 4U For: Ms. Merhai Due date: June 1st‚2013 Introduction: Organic chemistry. Two quantities one could measure with the presence of organic chemicals are chemical equilibrium and rate of reaction. Chemical equilibrium is the ratio between the forward and reverse process of a reaction. This is represented by the equation: K = products / reactants. When a reaction has reached equilibrium‚ the
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Scientists use Erlenmeyer flasks to hold different layers of reactions‚ heat solutions‚ and grow liquid cultures of bacteria. Students and scientists use graduated cylinders as precise instruments for measuring out different liquids. Disposable Lab Ware Disposable lab ware‚ which includes a large variety of tubes and flasks‚ is essential to any functioning biological lab. Test tubes‚ culture tubes and tissue culture flasks all fall under this category. Scientists use culture tubes and flasks to grow
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