How fast is your reaction? Part 1 – How temperature affect the rate of reaction Chemical equation Magnesium + hydrochloric acid → magnesium chloride + hydrogen Mg + 2HCL → MgCl2 + H2 Graph Conclusion and questions 1. What factors/variables did you keep the same in this experiment? * We kept the same volume of hydrochloric acid (10 cm3) and the magnesium ribbon (5cm) because that way we could get a fair test experiment. We also repeated
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1/29/15 TA: Kavitha Akula Experiment 4A: Determination of a Partition Coefficient for Benzoic Acid in Methylene Chloride and Water‚ and Experiment 4B: Solvent Extraction I: Acid-Base Extraction Using the System Benzoic Acid‚ Methylene Chloride‚ and Sodium Bicarbonate Solution Objective The purpose of this experiment is to familiarize oneself with the general procedures determining a partition coefficient at the microscale level and learn in weighing milligram quantities of materials on an electronic
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events‚ reactions‚ and phenomenons. Stoichiometry is a tool that is frequently used in environment science since almost nothing in nature is in its ideal states‚ which is why it was a useful tool for us in this experiment. The different amounts of sodium sulfate and calcium chloride dictated the experiments theoretical yields and percent yield‚ which was good because we need to recognize which reactants would be in short
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TABLE OF CONTENTS 1. IA (Alkaline Metals) 1.1. H………………………………………………………………………..2 1.2. Li………………………………………………………………………..2 1.3. Na………………………………………………………………………2 1.4. K………………………………………………………………………..3 1.5. Rb………………………………………………………………………3 1.6. Cs………………………………………………………………………3 1.7. Fr……………………………………………………………………….4 1. IIA (Alkaline Earth Metals) 2.8. Be………………………………………………………………………4 2.9. Mg………………………………………………………………………4 2.10. Ca………………………………………………………………………4
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Volume of sodium thiosulphate Na2S2O3 solution used It will be kept fixed at 2 cm3 throughout the experiment. Volume of starch solution used It will be kept fixed at 5 drops throughout the experiment. Volume of iodide I- solution used It will be kept fixed at 10cm3
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3H2SO4 (aq) 3I2 (aq) + 3H2O (l) + 3K2SO4 (aq) The iodine produced reacts with ascorbic acid immediately. Then‚ the iodine left is titrated by a standard solution of sodium thiosulphate. 2Na2S2O3 (aq) + I2 (aq) Na2S4O6 (aq) + 2NaI (aq) Since the concentration of standard sodium thiosulphate solution is unknown‚ sodium thiosulphate solution is first titrated against iodine. Since the end-point of the titration is not observable‚ starch solution is added to act as an indicator since
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Sodium is an electrolyte that controls the fluids in the body’s tissues and cells. It is also responsible for regulating blood pressure and volume‚ helping transmit impulses‚ and regulating the balance of blood and body fluids. I believe it is important to monitor your sodium intake in order to stay in good health. Kidneys are the most common concern when too much sodium is being taken in because it can lead to damage to the heart. When there is an excessive amount‚ the kidneys are unable to
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Name Naza Moore ID# 24120389 Lab# 2 Lab instructors Alecia Palmer and Donald Burke Course Instructor Maureen Wilson Lab Title Preparation of cyclohexene from cyclohexanol Aim Preparation of an Alkene by dehydration of an alcohol in the presence of a catalyst. Calculate the percentage recovery of products. Test for purity and identification of products. Abstract Cyclohexene and cyclohexanol are both colourless aromatic compounds. The major difference between the two is the presence
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(Capsicum annumL.) by Na2SO4 Salinity Sundas Zahoor‚ Hafza Abira Najam‚ Ummah Romana‚ Fatima Asghar Diyyal and Aqsa Nasir University of Gujrat‚ Gujrat‚ Pakistan Abstract: The present research was carried out to evaluate response of chili plants to sodium sulphate (Na 2So 4) salinity. There were three levels of Na2SO4 including control i.e. 0‚ 30and 60ppm. Experiment was laid down in completely randomized design (CRD) with three replicates. The result showed that the plants have no treatment of
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beakers‚ graduated cylinder‚ drying oven‚ Na2CO3 (sodium carbonate)‚ stir rod‚ scoopula‚ DI water‚ watch glasses‚ filter paper‚ ring stand‚ funnel‚ water samples with CaCl2 (calcium chloride) Procedure: 1. Measure out a 20ml sample of each A‚ B‚ and C hard waters 2. Place samples in separate beakers 3. Add .500g of sodium carbonate to each water sample beaker (absolute maximum concentration is considered to be 180 mmole‚ so this amount of sodium carbonate will allow for such a number‚ if present)
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