EXPERIMENT 2: Recrystallization and Melting Point Recrystallization (or Crystallization) is a technique used to purify solids. This procedure relies on the fact that solubility increases as temperature increases (you can dissolve more sugar in hot water than in cold water). As a hot‚ saturated solution cools‚ it becomes supersaturated and the solute precipitates (crystallizes) out. In a recrystallization procedure‚ an impure (crude) solid is dissolved in a hot solvent. As this solution is cooled
Free Solubility Solid Crystal
ICSE Class X Chapter 5 Hydrogen Chloride and Hydrochloric Acid Hydrogen chloride (HCl) : Formula : HCl Nature : Covalent. Molecular Mass : 36·5u [i.e. HCl = 1 + 35·5 = 36·5] Occurrence : (i) Present in gastric juices. (ii) Present in volcanic gases. Laboratory preparation of HCl gas : Hydrogen chloride gas is prepared in laboratory by heating conc. H2SO4 with NaCl. NaCl + H2SO4 Heat → NaCl + NaHSO4 Heat → NaHSO4 + HCl Sodium hydrogen sulphate Na2SO4 + HCl
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8) and the pH dependence of each process. Foods that we consume contain Iron in the ferric (Fe3+ ) form. Ferric form is not usually absorbed in the body. In the stomach‚ there is low pH of 2 due to presence of gastric acids such as Hydrochloric and Ascorbic acids. These acids provide an acidic environment for reduction of ferric iron to ferrous (Fe2+). Ferrous iron can be absorbed in the body system. As in following equation of iron (iii) reaction with Ascorbic acid ‚ the product is iron (ii) chloride
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Flowers and Acid Call them freaks‚ the underground‚ the counterculture‚ flower children‚ or just simply hippies‚ they are all loose labels for the youth culture of the 60’s that transformed life in the West as we knew it‚ introducing the spirit of freedom‚ of hope‚ of happiness‚ of change‚ and of revolution (Miles 9). The years that made up the 1960’s were some of the most exciting and turbulent years in American history. The post World War II baby boomers grew up. A president and
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University of Caloocan City Brgy. 175 Libis Camarin Caloocan City Production Plan Submitted by: Joly Barbero Maria Andrea Balana Eluisa Marie Espartero Mary Jane Omapas Wilma Balderama Jayson Pacit Submitted to: Dr. Isaias Borres Table of Contents I. Product / Services Description II. Production / Operation Process III. Production Schedule IV. Labor Requirement V. Machinery / Equipment Requirement VI. Raw materials VII. Plant Factory Location VIII. Plant Layout IX.
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FUNDAMENTALS OF Food & Beverage Production UNIT – I INTRODUCTION TO THE ART OF COOKERY Unit-II Aims & Objectives of Cooking food UNIT III Preparation of Ingredients Unit-IV Equipment used in kitchen UNIT-V KITCHEN ORGANISATION UNIT-VI METHODS OF COOKING UNIT VII STOCKS ‚GLAZES‚SAUCES AND SOUPS UNIT-VIII: BASIC PREPERATIONS UNIT IX FOOD COMODITIES UNIT – I INTRODUCTION TO THE ART OF COOKERY 1.1 Development of the
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UTILIZATION OF BANANA PEEL WASTE TO PRODUCE ETHANOL I Introduction Due to increasing demand for energy‚ renewable energy sources particularly waste products like banana peel waste can be utilized to produce ethanol‚ as the vitality of ethanol are well known in science world‚ besides the methods of producing it is incomplex and it can give big impact to the world. II Body A Ethanol is widely recognized these days as a very promising alternative source of energy (Low & Isserman
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analyze data and draw a conclusion. In this experiment I will find out that in a type of water the Alka-Seltzer will dissolve faster and slower. Alka-Seltzer is one of the world’s best known antacids. Its main function is to absorb excess stomach acid. II. MATERIALS: * Tap Water - Warm Water * Cold Water - Salt Water * Acidic Water -5 cups (250 mL of water in each cup) * A whole Alka-Seltzer tablet III. HYPOTHESIS: My hypothesis is that the Alka-Seltzer tablet
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Development Board 4. Functions Of the Board 5. Products 6. Production and Marketing 7. Conclusion Introduction… Coconut‚ ‘Cocus nucifera linn’‚ the most important‚ ancient and useful of the tropical palms‚ has been cultivated in India from the time immemorial. Because of the economic importance‚ this plantation crop is grown in more than 90 countries across the world and India ranks third in production of coconut. Traditionally‚ the economic importance of coconut was laid
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INDUSTRY AND THE ENVIRONMENT UNITED NATIONS INDUSTRIAL DEVELOPMENT ORGANIZATION TECHNICAL REPORT No 26 - Part 1 Mineral Fertilizer Production and the Environment Part 1. The Fertilizer Industry ’s Manufacturing Processes and Environmental Issues In collaboration with the INTERNATIONAL FERTILIZER INDUSTRY ASSOCIATION MINERAL FERTILIZER PRODUCTION AND THE ENVIRONMENT Part 1. The Fertilizer Industry ’s Manufacturing Processes and Environmental Issues INTERNATIONAL FERTILIZER
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