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    Acid-Base Buffers

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    CHEMICAL REACTIONS: ACID-BASE BUFFERS Short Overview Acids and bases represent two of the most common classes of compounds. Many studies have been done on these compounds‚ and their reactions are very important. Perhaps the most important reaction is the one in which an acid and base are combined‚ resulting in the formation of water (in aqueous solution) and a salt; this reaction is called neutralization. A buffer solution is a solution that contains both an acid and a salt containing

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    Balance Sheet

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    1. Q:Collect Balance Sheet of five different companies. Try to analyse it in your own words. Analysis can be in terms of change in profit‚ asset‚ liabilities. Etc ZYNGA [pic] The First comapny we’ll be looking at is Zynga. Let’s jump right into it. Across the board‚ the Total Current Assets is less than the previous year‚ more more than other earlier years. This could indicate that the company may have liquidized some of their assests within the year. Total Assests is greater than the

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    Balance Sheet

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    Merck Consolidated Balance Sheet |   |   |   |   |   | € million | ------------------------------------------------- Note | ------------------------------------------------- Dec. 31‚ 2012 | ------------------------------------------------- Dec. 31‚ 2011 | ------------------------------------------------- Jan. 1‚ 2011 | 1 | Previous year’s figures have been adjusted‚ see Note [5] | | Current assets | -------------------------------------------------   | -------------------------------------------------

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    Acid-Base Lab

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    Anna Powell 2nd I.Title: Acid-Base Titrations AP Chemistry Laboratory #6 II.Purpose: The purpose of this experiment is to standardize a sodium hydroxide solution and use the standard solution to titrate an unknown solid acid. The equivalent mass of the solid acid will be determined from the volume of sodium hydroxide added at the equivalence point. The equilibrium constant‚ Ks‚ of the solid acid will be calculated from the titration curve obtained by plotting the pH of the solution versus

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    Acid-Base Calculations

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    Acid-Base Calculations The Ion-Product Constant for Water‚ Kw Water undergoes ionization to a small extent: H20(l)  H+(aq) + OH–(aq) The equilibrium constant for the reaction is the ion-product constant for water Kw: (1) This is a key equation in acid-base chemistry. Note that the product of [H+] and [OH–] is a constant at a given temperature (Eq(1) value is for 25oC). Thus as the hydrogen ion concentration of a solution increases‚ the hydroxide ion concentration decreases

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    Chemistry Acid and Base

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    Aqueous Acid/Base Chemistry Resources: Harris ‘Quantitative Chemical Analysis’ Review: Pure water has a pH = 7 Autodissociation: H2O (( H3O+ + OH- K = [H3O+][OH-]/[H2O] -log[H3O+] = 7 [H3O+] = 10-7 M = [OH-] [H2O] = 55.56 M K = 1.8 x 10-16 ; pKa = 15.74 pKa is the acid dissociation constant; low pKa (strong acid‚ high pKa (weak acid we can also write Kw = [H3O+][OH-] Kw = 10-14 In water‚ pH + pOH = 14 pH scale Strong

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    Acids, Bases & Buffers

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    Title: AcidsBases & Buffers Objectives: 1. To understand the acid-base chemistry. 2. To prepare and evaluate a buffer system 3. To measure the buffering capacity of two types of isotonic drinks. Introduction: There are acid-forming‚ basic forming and neutral food‚ however the acid or alkaline properties of a food is unable to judge by the actual acidity of the food itself. For example‚ citrus fruits such as lemon are acidic‚ but they are alkaline-forming when we consume and digest it. Therefore

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    Acid and Bases Ib

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    Acids And BAses Acids And BAses 8.1 8.2 8.3 8.4 18.1 18.2 18.3 18.4 18.5 Theories of acids and bases Properties of acids and bases Strong and weak acids & bases The pH scale Calculations involving acids and bases (AHL) Buffer solutions (AHL) Salt hydrolysis (AHL) Acid-base titrations (AHL) Indicators (AHL) 8 8.1 THeORies OF Acids And BAses 8.1.1 Define acids and bases according to the Brønsted–Lowry and Lewis theories. 8.1.2 Deduce whether or not a species could act as a Brønsted–Lowry

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    STANDARDIATION OF ACID AND BASE Eunice Ivy B. Gamboa ABSTRACT Solutions of known concentration are prepared by dissolving measured masses of standard acids in distilled water. The concentrations of unknown solutions of sodium hydroxide are determined by titration. An acid solution reacts with a base solution in a "neutralization" reaction. Titrations permit the concentrations of unknown acids/bases to be determined with a high degree of accuracy. In order to analyze unknown acids/bases‚ we must have

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    REVIEW SHEET EXERCISE 11 Blood Analysis NAME: LAB TIME/DATE: Hematocrit Determination 1. Hematocrit values are usually ( *higher / lower ) in healthy males‚ compared to healthy females. Give one possible explanation for this. 2. Living at high elevations will cause a person’s hematocrit to ( *increase / decrease ). Explain your answer. 3. Long-term athletic training will cause a person’s hematocrit to ( *increase / decrease ). 4. What is anemia? Condition where inadequate

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