Rinse skin with lots of cool water if splashed with chemical and report any spills to the teacher immediately. Source: Nelson Chemistry 11 (2010) ACID BASE TITRATION Purpose: To determine the concentration of solution of sodium hydroxide by acid-base titration and analyse the shape of a titration curve. . Pre-Lab: / 11 I /8 K/U / 5 C 1) What colour is the indicator phenolphthalein in an acidic solution and in a basic solution? (2 K/U) Phenolphthalein
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D. REACTIONS OF ALDEHYDES AND KETONES WITH SODIUM HYDROXIDE (By: Mary Deo Luigi J. Mabunay 1N-3) Objective: To determine the reactions of Aldehydes and Ketones when combined with Sodium Hydroxide. Process: * Obtain 5 clean and dry test tubes * Put 2mL of 40% NaOH solution to test tubes 1‚ 2 and 3 and on test tubes 4 and 5‚ put 10% NaOH solution * Add 10 drops of the following solution: * Tube 1: formaldehyde * Tube 2: benzaldehyde * Tube 3: acetaldehyde
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organic compound and purify its respective acidic product through the techniques of an acid base extraction‚ recrystallization‚ and use of Melt Temp (melting point range). The reaction of an unknown acid (3-chlorobenzoic acid) with diethyl and sodium hydroxide was observed‚ and the solution naturally separated into an aqueous and organic solution. The mixture of acid and organic solution was created and then separated through the Hirsch funnel into separate beakers of an aqueous and organic solution
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lab is for me to attempt to verify the Law of Conservation of Mass. Procedure: Acid Base Neutralization 1. Using 2 modified‚ beral pipettes fill pipet an about 1/5 full of white vinegar and pipette B about 1/5 full of 1.0 M NaOh (sodium hydroxide). 2. Place the 2 Pipets on the beam balance and read and record the total mass of the 2 pipets. 3. Carefully telescope the stem of pipet A into the stem of pipette B without spilling any liquid. 4. Mix the solutions by gently
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The goal for this experiment is to determine which out of the four balanced chemical equations best represent the thermal decomposition of sodium bicarbonate. The guiding question will be answered with the outcome of the sodium bicarbonates thermal decomposition and it being plugged in into the four balanced chemical equations. John Dalton atomic theory explains two fundamental laws of chemistry which are the law of conservation of mass and the law of definite proportions. The atomic theory states
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Using two drops from chemical 1 and two drops of chemical two‚ unless otherwise stated‚ then recording the type of physical reaction or color changes that occurred. Well#/questions Chemicals Reactions A NaHCO 3 and HCI - C0 2 When combined Sodium Bicarbonate and Hydrochloric Acid‚ Carbon Dioxide is produced. The two chemicals do not undergo a change in color but a chemical change when CO2 is produced. B HCI and BTB When Hydrochloric acid and Bromothymal blue are combined there is a physical
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demand analysis of caustic soda? 2.1 CAUSTIC SODA Sodium hydroxide‚ also known as caustic soda‚ or lye‚ is an inorganic compound with the chemical formula NaOH. It is a white solid and highly caustic metallic base and alkali salt which is available in pellets‚ flakes‚ granules‚ and as prepared solutions at a number of different concentrations. Sodium hydroxide forms an approximately 50% (by weight) saturated solution with water. Sodium hydroxide is soluble in water‚ ethanol and methanol. This alkali
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Volumetric Flask 250cm3 Filter funnel Pipette Burette 50cm3 Retort Stand Beakers 100cm3 Standardized sodium hydroxide solution 0.1M Pipette filter Conical flasks 250cm3 Phenolphthalein Indicator Procedure 1) Rinse the burette with distilled water and then with oxalic acid solution and fill the burette with oxalic acid solution. 2) Rinse the 10.0 cm3 pipette with sodium hydroxide solution‚ and transfer it to a conical flask. 3) Add two drops of phenolphthalein indicator. Titrate
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unknown. Sucrose for example is insoluble in dichloromethane‚ while aspirin is soluble in CH2Cl2‚ but not in H2O. The organic compound sodium hydroxide will convert aspirin to Sodium Acetylsalicylate‚ which is soluble in water. Phenacetin and Actinilide are soluble in CH2Cl2‚ but not water. Actinilide and Phenacetin can be converted to salts by Sodium Hydroxide. The drawn out calculations on the last page will show this process being completed. Phenacetin and Acetinilide being broken down into salts
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Title : Preparation of a standard solution Aim To prepare a standard solution of potassium hydrogenphthalate which will later be used to standardize sodium hydroxide solution‚ NaOH. Research question How does different molarity of potassium hydrogen phthalate solution which is prepared by dilution process influence the volume of sodium hydroxide‚ NaOH used during titration process until the colourless phenolphthalein indicator solution turns pink where the volume of potassium hydrogenphthalate used
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