beaker 50-mL buret KHP Procedure: Part 1: Standardization of a Sodium Hydroxide Solution 1. Obtain a sample of pre-dried potassium hydrogen phthalate (KHP) 2. Weigh 0.4-0.6 grams of KHP‚ then record in Data Table 1. 3. Transfer the KHP into the Erlenmeyer flask using the funnel‚ then use the spray bottle to get any remaining solid into the flask. 4. Add 40 mL of water to the flask and whirl until thoroughly dissolved. 5. Obtain 75 mL of sodium hydroxide (NaOH) solution. 6. Clean a 50-mL
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acid or base. Purpose: I. Prepare a standard solution of sodium hydroxide II. Standardize a sodium hydroxide solution by using potassium hydrogen phthalate (KHP) III. When given whether the acid is monoprotic‚ diprotic‚ or triprotic ‚ determine the molar mass of the unknown organic acid. IV. Calculate the Molarity of the Soft drink. Materials: * 50 mL Buret * Beaker * Erlenmeyer Flask * Sodium Hydroxide * Water * Balance * Unknown Acids
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Experiment 2b: Determination of the ASA Content of Aspirin Due Date: September 16‚ 2013 Experiment#: 2b Title: Determination of the ASA Content of Aspirin Aim: To determine the Molar Concentration of NaOH and HCl acid used in their Standardization processes and to determine the acetylsalicylic acid (ASA) content in Aspirin. Materials/Apparatus: materials used are the same as that outlined in the laboratory procedure prepared by the laboratory instructor. Procedure: The procedure used
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CHEM 121L General Chemistry Laboratory Revision 2.1 The Determination of Oxalate Ion in Ferric Oxalate Trihydrate using Titrimetry Learn how to perform a quantitative chemical analysis. Learn how to perform a titration. Learn about Oxidation-Reduction reactions. In this laboratory exercise‚ we will determine the Percentage Oxalate Ion (C2O42-) in our Potassium Ferric Oxalate Trihydrate (K3[Fe(C2O4)3]•3H2O) sample using a technique called Titration; a type of Volumetric Analysis. This will
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readily‚ and accurately‚ measured by the method originally developed by Winkler in 1888 (Ber. Deutsch Chem. Gos.‚ 21‚ 2843). Dissolved oxygen can also be determined with precision using oxygen sensitive electrodes; such electrodes require frequent standardization with waters containing known concentrations of oxygen. They are particularly useful in polluted waters where oxygen concentrations may be quite high. In addition‚ their sensitivity can be exploited in environments with rapidly-changing oxygen
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Unit _ - Control of Air Pollution FABRIC FILTER – It consists of a tabular bag which is closed at the upper end and has a happer attached at the lower end to collect particles when they are dislodged from the fabric. Many such bags are hanged in a bag house. The filter bags are cleaned occasionally by a mechanical shaker for efficient filtration. It has high efficiency and can filter 0.5 µm size particles. ELECTROSTATIC PRECIPITATOR – It works on the principle of electrostatic precipitation
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initial rate of the reaction can be measured by measuring the time it takes to produce a fixed small amount of iodine in the reaction as mentioned above. This can be done by adding thiosulphate ions into the reaction system which instantaneously revert the iodine molecules to iodide ions. When the amount of thiosulphate ions run out‚ iodine is produced and there is a sudden colour change. A sudden colour change makes the time required
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carbonate and 5.07% bicarbonate content in the unknown sample. Introduction Soda ash or sodium carbonate is a sodium salt of carbonic acid. It is commonly known for its everyday use as water softener.[1] It can be naturally extracted from plants of synthetically produced from large amounts of sodium. It may contain small to moderate amounts of chlorides and hydroxides as impurities. The hydroxide present in sodium carbonate reacts with an acid titrant like HCl and its total alkaline strength is increased
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volumetric flask. In the second method‚ the solution is standardized by titrating - a weighed quantity of a primary standard a weighed quantity of a secondary standard or a measured volume of another standard solution. As a result‚ standardization is a process of determining the concentration of a substance in solution by adding to it a standard reagent of known concentration in carefully measured
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concentration of acetic acid of vinegar‚ in terms of (m/m). Introduction Neutralization is a reaction of an acid with a bases to produce a salt and water. For example‚ the reaction of the strong acid HCl with the strong base NaOH produces the salt sodium chloride and water HCl(aq) NaOH(aq) ( NaCl(aq) H2O(l) Since the acid‚ base‚ and salt in this reaction are all strong electrolytes‚ the net ionic equation for this reaction is H(aq) OH-(aq) ( H2O(l) This same result occurs in the reaction
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