Equilibrium constant

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    Buffer Lab

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    of how this relates to the biological studies of biology and to the advantage of humans. Hydrochloric acid combined with water will not a make good buffer system. Hydrochloric acid is a strong acid that will not coexist with any other base in equilibrium. When hydrochloric acid drops…

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    When it comes to finding out the acidity of a liquid solution a pH scale is used to measure how acidic or basic the solution is. According to Petrucci et al: “The pH of an aqueous solution can be determined and calculated by using the concentration of Hydronium ion concentration in the solution. Acidic solutions have high hydronium concentrations and lower hydroxide concentrations. Basic solutions have high hydroxide concentrations and lower hydronium concentrations” (p.670). The acidity of…

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    Benzoic Acid Lab Report

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    The list of errors start from the beginning of the experiment. Although the numbers seem to be close to the actual values, there is still room for error with the numbers. What the class noticed first is that we could have been working with very impure benzoic acid. The benzoic acid we were given was made by the 102 chemistry students, meaning that it wasn’t properly made. Students have said that they were rushed and weren’t able to take their time to filter the solid out of the solution. We had…

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    Hysteresis Lab Report

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    Question 1: pH can be described as a measure of acidity or basicity (Alkalinity) of a solution. It is exactly equal in amount to the negative log of the concentration of hydronium(H3O+) ions. Due to the negative log relationship, increased hydronium ions transform to lower pH. When we add it to water, an acid releases hydrogen ion. Hydrogen ions in water unite with the water molecules to form hydronium ions, thereby lowering the pH and increasing the acidity of water. Water exposed to air is…

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    Accuracy and Precision Lab Report By Connor MacFarland 10.23.2016 IBC 1 Question What is the difference between accuracy and precision and how can we demonstrate the difference? MATERIALS Pencil Notebook Paper 100 mL Graduated Cylinder 1 Gallon of water Ruler Unmarked Plastic Container 3 different kinds of Rocks of different sizes Triple Beam Balance PROCEDURE Estimating Lengths Procedure A piece of notebook paper was torn into 8 rectangles Without a ruler, a line was drawn which…

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    Introduction: The purpose of this lab was to use the general chemical knowledge to identify 10 different unknown solutions. There are two main techniques that were used which are, measuring their pH, and, reacting all of the solutions together. Identifying an unknown solution is an essential skill for anyone who is going to work in a lab because many times, the label might not be accurate, or damaged. Procedure: Safety Precautions: Eye protection - Avoid skin contact. Procedure: Ten…

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    analyzing the rates of certain species and reactions, and is a crucial technique to predict different reactions. Kinetics is a very broad topic, thus the experiment focused only on the derivation of empirical rate laws and their corresponding rate constants. The rate of a specific reaction can be expressed with an experimentally-determined, or empirical, rate law in the form of rate = k[A]x[B]y[C]z. The exponents x, y, and z depend on the term…

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    B. Buffers. 1. Two solutions, A. being 1.0 x HCl, and B. being 0.10 M will be given, as well as buffer solution 1 M NaOH. 2. Have 25 mL of solution A. and B. in two separate beakers. 3. Check the pH of both solutions without any NaOH first. Then begin checking pH after 1 drop, then after 10 drops, and lastly 25 drops. After each set of drops be sure to mix solutions. 4. Compare both sets of pH to determine which had an easier time resisting change. C. Titration curves. 1. Insert NaOH into…

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    Multip Ph Lab Report

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    Scientists use a scale to measure how acidic or basic a liquid is. That scale is called a pH scale. The pH scale is a number from zero to fourteen. Accordingly, zero to seven liquids are considered acid. However, seven is considered a neutral, like distilled water. Therefore, eight to fourteen the liquids are considered basic. For instance, a pH of two is going to be an acidic liquid. Thus, a pH of twelve would be measured as a basic liquid. Additionally, a strip of litmus paper will…

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    Primary Standard

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    curve that shows how the pH changes when the titrant is being added. Buffer solution: buffer solution is simply a mixture that contains either a weak acid and its conjugate base or a weak base and its conjugate acid. It is used for keeping the pH constant in a solution. Standardization: If there is an unknown solution, titration which is used for identifying the concentration of a known solution to find out the unknown solution’s concentration is called standardization. 2) Necessaries for a…

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