Chemical Reactions Introduction Pre-lab questions 1. Which reactants used in this experiment are flammable? Discuss the safety precautions that are necessary when working with flammable materials in the lab? 2. Summarize the following description of a chemical reaction in the form of a balanced chemical equation? 3. Common observations of a chemical reaction are described in the introduction section. For each observation‚ name a common or everyday occurrence that must involve a chemical reaction? Research
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Rates of Reaction Coursework Aim: To find out how different concentrations of sodium thiosulphate (Na S2 O3) affects the speed of its reaction with Hydrochloric acid (HCL). Introduction When Sodium Thiosulphate and Hydrochloric acid react they produce a cloudy precipitate. Both of the chemicals are clear solutions and they react together to form a yellow precipitate of sulphur‚ the equation for this reaction is: Na2 S2 O3 + HCL‚ H2 O + NaCL + SO2 + S Sodium Thiosulphate + Hydrochloric
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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
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E XPE RIME NT 4 . 5 Reactions of acids Aim To investigate and compare some reactions of a strong acid‚ hydrochloric acid‚ and a weak acid‚ ethanoic acid (common name‚ acetic acid) Equipment Dropper bottles containing: • 0.1 M hydrochloric acid‚ HCl • 0.1 M ethanoic acid (acetic acid)‚ CH3COOH • 0.1 M sodium hydroxide‚ NaOH • 1 M hydrochloric acid‚ HCl • 1 M ethanoic acid (acetic acid)‚ CH3COOH • universal indicator solution • limewater (calcium hydroxide‚ Ca(OH)2) Marble chips (calcium carbonate
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IB Chemistry 2 Prompt -Design an experiment relating to or utilizing the concepts of stoichiometry. Background Information -Stoichiometry is the study of the quantitative relationships between reactants and products. You can calculate or predict the amount of reactants needed or product will be produced from a balanced equation with some known quantitative physical properties. Stoichiometry was first introduced to chemistry by Jeremias Benjamin Richter from Germany in the late 18th century
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This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions‚ diagrams if needed‚ and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor. Observations When using 1.0 g of CaCl2·2H2O‚ stoichiometric calculations should give the following results: 1
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Lab Report: Stoichiometry Lab Oct. 27‚ 2011 Claire Elizabeth Lab Partners: Hannah Signature:___________________ Introduction- Baking soda and vinegar are two common materials found in almost every household. That‚ plus the fact that all the starting and finishing materials are non hazardous and safe‚ is why this is one of the first chemical reactions that many people are exposed to The purpose of this experiment tests which of the two reactants (vinegar and baking soda) is the limited
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Introduction: The importance of this lab is to get a deeper understanding of how the concepts of solutions and insolubility applies to the lab’s purpose of making chalk using precipitation reactions. A precipitation reaction is when a solid/ precipitate (insoluble) is formed when two solutions that contain soluble salts are combined. Some additional scientific concepts investigated in this lab are insolubility‚ double replacement‚ and limiting reactants. Insolubility occurs when a solute is incapable
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26‚ 2010 Experiment No. 2 – Coupled Reactions R.S. Velasco Institute of Chemistry‚ College of Science University of the Philippines‚ Diliman Quezon City‚ Philippines Received Dec. 1‚ 2010 ------------------------------------------------- ------------------------------------------------- ABSTRACT The reaction of carbon dioxide gas to form carbon monoxide and oxygen gas is non-spontaneous (∆G > 0)‚ thus we coupled it with the reaction that has a free energy that is negative
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01_anthrax.pdf http://ahd.kerala.gov.in/index.php/livestockdiseases?start=3 http://www.who.int/csr/resources/publications/anthrax/whoemczdi986text.pdf http://books.google.com.ph/books?id=EKYihvnaA7oC&pg=PA136&lpg=PA136&dq=ascoli%E2%80%99s+thermo+precipitation+test+procedure&source=bl&ots=EghgCCoqbO&sig=t0pQ_LpGC0HLOqsod228WGWYP5k&hl=en&sa=X&ei=tF4bUZ7xIsftrAf584CQBw&ved=0CGIQ6AEwCA#v=onepage&q&f=false http://www.austincc.edu/microbugz/starch_hydrolysis.php http://www.microbelibrary.org/index.php?op
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