Finding the Activation Energy of the reaction between Hydrochloric Acid and Sodium Thiosulfate The equation for the reaction is: S2O32- (aq) + 2H+(aq) ⋄ SO2 (g) + S(s) + H2O (l) Equipment - 2 boiling tubes - 400 cm3 beakers - Marker pen - Stand and clamp - Timer - Bunsen burner‚ tripod and gauze - 0 – 100 oC thermometer - 2 x 10 cm3 measuring cylinders - Access to a fume cupboard. Method 1. Label two boiling tubes A and B. Mark a dark spot on the side of a 400cm3 beaker‚ then ½ fill
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Experiment 4: Analyze a solution of potassium hydroxide using standard hydrochloric acid Theory . Introduction: Titration is a procedure used in chemistry in order to determines the molarity of an acid or a base. In the other words‚ it is also consider as acid-base neutralization reaction (Darrell D. Ebbing 1976). A chemical reaction is set up between a know volume of a solution of unknown concentration and a known volume of a solution with a known concentration. The relative acidity or
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Title: Investigation of action of saliva and hydrochloric acid in two carbohydrate solutions. Objective: To determine the action of amylase and hydrochloric acid in two carbohydrates solutions Apparatus and equipments: 1. Boiling tube 2. Metal test tube racks 3. Beaker 4. Graduated plastic dropper 5. Water bath‚ ~37ᵒC 6. Water bath‚ ~95ᵒC Materials: 1. Carbohydrate solution A 2. Carbohydrate solution B 3. Benedict’s solution 4. 3M Hydrochloric acid 5. 3M Sodium hydroxide Procedures: 1. Two
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then I will see the temperature slope increase in the reaction with an increased concentration because with an increase of moles‚ the particles will be colliding more often‚ therefore increasing the probability that the proper energy and alignment will occur to create more collisions in the same amount of time. Methods: List of Materials: • 110 mL of NaOH at 1 M (10 mL per run) • 110 mL of NaOH at 0.5 M (10 mL per run) • 220 mL of Acetic Acid at 50% (10 mL per run). • Vernier Temperature Probe.
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Atausch July 28‚ 2014 Bio 102 Lab Final Exam: Acids and Enzymatic Reaction Purpose: To examine how an acidic fluid will modify the outcome of an enzymatic reaction. Introduction: Enzymes are “specialized proteins made by living cells that serve as biological catalysts.” (eScience Labs‚ LLC‚ 2013) These enzymes “allow certain industrial processes to be carried out at normal temperatures and pressures‚ thereby reducing the amount of energy and expensive equipment needed.”(BBC‚ 2012) Enzymatic
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AbstractThe rates of reaction of Alkali metals and Alkaline Earth meatals are compared in this lab. The pH of each of the resulting metal solutions are tested and the products of the reaction between calcium and water is discovered. The tested elements are sodium‚ lithium‚ potassium and calcium and each of them were placed in a beaker filled with water. The resulting solutions pH levels were tested with litmus paper. There were more steps for caclium because it is the only Alkaline Earth metal. For calcium
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Metals Physical Properties of Metals versus Non-metals Properties | Electrical conductivity | Heat conductivity | Melting and Boiling points | Malleability & ductility | Lustre | Metals | Good | Good | High | High | Shiny | Non-metals | Poor | Poor | Low | Low (Brittle) | Dull | Chemical Properties of Metals versus Non-Metals Properties | Metals | Non- metals | Reaction with oxygen | Form basic or amphoteric oxides | Form acidic or neutral oxides | Ionisation | Lose electrons
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Oxidation & Reduction I. Metal-Metal Ion Displacement II. Halogen Displacement Reactions INTRODUCTION A series of experiments had been conducted to determine the order of displacement strengths of the metals and halogen chosen for the experiments. A displacement reaction is a reaction in which one element(metal or non-metal) displaces another element(metal or non-metal) from its salt solution. In the displacement reaction of metals‚ the more electropositive metal will displace the less
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Program: Foundation In Science Unit code: FHSC 1214 Unit description: Fundamentals of Cell Biology Year and trimester of study: 2013‚ trimester 1 Title of lab report: Practical 2 Investigation of Action of Saliva and 3 M Hydrochloric Acid in Two Carbohydrate Solutions Lecturer’s name: Mr. Paul Davidson Discussion The name of enzyme involved in this experiment is salivary amylase‚ which presents in our saliva. Salivary amylase catalyses
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extract a metal Industrial mineral- either has some direct practical use‚ or take part in some industrial process Gems and precious stones are an exception to industrial metals as they do have a direct ‘practical’ application but are dealt with separately. Some common minerals include: * * Silica- (silicon dioxide) most common mineral on earth * Calcite- (calcium carbonate) main mineral in limestone and marble Ore: A naturally occurring solid material from which a metal or valuable
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