MANUFACTURE OF SULPHURIC ACID IN INDUSTRY 1. Contact process produces more than 90% of the world’s sulphuric acid. 2. The raw materials used for the manufacture of sulphuric aced are sulphur‚ air and water. 3. The Contact process consists of three stages. a) Production of suphur dioxide b) Conversion of sulphur dioxide to sulphur trioxide. c) Production fo sulphuric acid 4. Stage I: Production of sulphur dioxide a) Sulphur is burnt in air to produce sulphur dioxide. S(s) + O2 (g)→SO (g) b) Burning
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Chapter 13 Acids and Bases (Dr Chong Fai Kait) 1) A 7.0 103 M aqueous solution of Ca(OH) 2 at 25.0 °C has a pH of __________. A) 12.15 B) 1.85 C) 1.4 102 D) 7.1 1013 E) 11.85 Answer: A 2) The acid-dissociation constant at 25.0 °C for hypochlorous acid (HClO) is 3.0 108 . At equilibrium‚ the molarity of H 3 O in a 0.010 M solution of HClO is __________. A) 1.7 105 B) 0.010 C) 5.8 1010 D) 4.76 E) 2.00 3) Using the data in the table‚ which of the conjugate acids below is the weakest
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Introduction: Acid rain increases the rate of corrosion on statues made of certain material. The town council wants to build a statue that will not be affected by acid rain. In this experiment‚ three different types of rock are used on vinegar (acting as acid rain). The rocks used are marble‚ granite‚ and red sandstone‚ which are the most popular forms of rocks used to build monuments. Each type of rock will be submerged under 20 ml of vinegar in their own separate container. The pH of acid rain around
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reaction of 0.139 grams of trans-cinnamic acid‚ 0.8 mL of glacial acetic acid‚ and 1.0 mL of 1.0 M of Bromine in acetic acid was recrystallized to form a solid‚ clear‚ crystal- like product. The melting was taken from the recrystallized product to determine what had been obtained. The melting point was found to be 130.5°C-133.7°C. Concluding that the product formed from the addition of bromine was a mixture of the erythro-2‚ 3-dibromo-3-phenylpropanoic acid‚ which has a known melting point of 204°C
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Chemistry: Strong Acid and Weak Base Titration Lab Cherno Okafor Mr. Huang SCH4U7 November 21st‚ 2012 Data Collection and Processing Concentration of the standard HCl solution: 0.1 M Data Collection: | Trial 1 | Trial 2 | Trial 3 | Final HCl Buret Reading ± 0.05 mL | 38.3 | 45 | 54.5 | Initial HCl Buret Reading ± 0.05 mL | 29.9 | 38.3 | 45 | Volume of NaHCO3 used ± 0.1 mL | 9.2 | 9.5 | 9.8 | Qualitative Data: * I used the
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Acids‚ Bases‚ and Buffers Introduction: The pH scale is used to determine how acidic or basic a solution is‚ ranging from 1-14. The most acidic of all acids are at a pH level of 1 and the most basic of all bases are at 14. The neutral pH level is 7‚ which is what drinking water is. The pH level is determined by the amount of H+ ions present in a solution‚ and the more H+ ions there are the more acidic it is‚ and the lack of these ions results in more basic solutions. One distinguishing feature
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length of magnesium · Change the amount of acid · Change the amount of water Method: · Set up apparatus as shown · Add 30ml of hydrochloric acid into the beaker · Measure 5cm of magnesium · Add the 5cm of magnesium to the hydrochloric acid · Put a bong onto the conical flask · Start timing · Measure the amount of gas collected every 10 seconds for 2 minutes Diagram: Prediction: I predict that as the concentration of the Hydrochloric acid increases‚ the time taken for the magnesium
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Bioresource Technology 79 (2001) 207±225 Review paper The production of poly-(c-glutamic acid) from microorganisms and its various applications Ing-Lung Shih *‚ Yi-Tsong Van Department of Environmental Engineering‚ Da-Yeh University‚ 112 Shan-Jiau Road‚ Da-Tsuen‚ Chang-Hwa 51505‚ Taiwan‚ ROC Accepted 9 April 2001 Abstract This review article deals with the chemistry and biosynthesis of poly-(c-glutamic acid) (c-PGA) produced by various strains of Bacillus. Potential applications of c-PGA as
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Acid-Base Titration Pre-Lab Discussion In the chemistry laboratory‚ it is sometimes necessary to experimentally determine the concentration of an acid solution or a base solution. A procedure for making this kind of determination is called an acid-base titration. In this procedure‚ a solution of known concentration‚ called the standard solution‚ is used to neutralize a precisely measured volume of the solution of unknown concentration to which one or two drops of an appropriate acid-base
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FREE FATTY ACID TEST AIM: To determine seed FFA MATERIALS REQUIRED Chemcals required * Oxalic acid pellets * Sodium hydroxide pellets * Rectified spirit * Phenolphthalein * Distilled water Apparatus required * 250ml standard flask(oxalic acid) * 1l std flask(sodium hydroxide solution) * 50ml beaker for solution preparation * 250ml beaker for solution preparation * Spatula * 50ml burette with standard for titration * 100ml conical
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