2014 Zamir Deen Virtual Chem Lab 6-2 & 6-3 Ranking Salt Solutions by pH 6-2: Ranking Salt Solutions by pH In this assignment you will be asked to rank aqueous solutions of acids‚ bases‚ and salts in order of increasing pH. This is most easily done by first identifying the strong acids that have the lowest pH‚ the strong bases that have the highest pH‚ and the neutral solutions that have a pH near 7. The weak acids will have a pH between 1 and 6 and the weak bases between 8 and 14. The exact order
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Page 20 Acids and bases Unit plan Grade 12 General Objectives: ▪ Introduce pH‚ acid and base definition ▪ Discuss acid‚ base‚ strong acid‚ weak acid‚ aqueous‚ neutral‚ pH definitions. ▪ Introduce Kw the ion product of water. ▪ Introduce Kw the ion product of water ▪ Explain through Kw why solutions with pH less than 7 are acidic and why those with pH greater than 7 are basic. ▪ Define volumetric analysis‚ titration‚ standard solution‚ equivalence
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Results: The experimental results for part one is as follows: Part One Data Table | Initial pH | Final pH | Test Tube A | 6 | 1 | Test Tube B | 4 | 4 | Test Tube C | 4 | ----- | Test Tube D | 4 | 4 | Test Tube E | 6 | 11 | The experimental results for part two is as follows: Part Two Data Table | Before CO2 was Added | After CO2 was Added | Colour | Blue/green | Light green/yellow | pH Level | 8.0pH | 5.0pH | Discussion: For thousands of years‚ people have known lemon juice
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Effect of Varying pH on the Rate of a Reaction Catalysed by Trypsin Aims I hope to determine the effect of varying pH on the rate of reaction catalysed/controlled by the enzyme trypsin. Method 1. Add 4cm³ of the 2% trypsin solution in to 6 test tubes labelled A-F 2. Add 4cm³ of the appropriate buffer solution to each. ( I will be testing pH 4‚5‚7‚8‚8.8 and 10) 3. Add 4cm³ of distilled water and 4cm³ of the appropriate buffer solution to 6 control test tubes labelled CA-CF to see if the pH alone will affect
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1. Match each of the definitions in Column A with the appropriate description in Column B. Column A Column B F 1. pH E 2. acid D 3. base A 4. acidosis B 5. alkalosis C 6. carbon dioxide a. condition in which the human body’s pH levels fall below 7.35 b. condition in which the human body’s pH levels rise above 7.45 c. mixes with water in the blood to form carbonic acid d. substance that binds to H+ in solution
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Fajardo of BSFT 2-1N 1. Calculate the pH of a dilute solution that contains a molar ratio of potassium acetate to acetic acid (pKa=4.76) of: a. 2:1 pH = 4.76 + log[2]/[1] = 4.76 + 0.3010 = 5.06 b. 1:4 pH = 4.76 + log[1]/[4] = 4.76 + (-0.6021) = 4.16 c. 6:5 pH = 4.76 + log[6]/[5] = 4.76 + 0.0792 = 4.81 d. 2:3 pH = 4.76 + log[2]/[3] = 4
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Enzyme Lab 6 03/13/2013 Report by Mary Jo Anthony I. Introduction II. Materials and Methods III. Results IV. Conclusion and Discussion Introduction Background Information: This lab allowed us to study chemical reactions and how catalysts will affect the rate of these reactions. The reaction we studied is the breakdown of hydrogen peroxide to water and oxygen and it is vital to life. The molecule hydrogen peroxide is a molecule that is toxic
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Maryely Ramirez Professor Theresa Sterner Bio Lab 105 04 November 2013 The Effects Environmental Temperature and pH have on the Activity of Porcine Pancreatic Amylase Introduction There are many types of enzymes and each has a specific job. Enzymes are particular types of proteins that help to speed up some reactions‚ such as reactants going to products. One of them is the amylase enzyme. Amylases are found in saliva‚ and pancreatic secretions of the small intestine. The function of amylase is
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could potentially be infected of polluted. The tests we ran helped determine the amount of pollution and whether or not it is safe for the wildlife to live in as a habitat. The tests we conducted were: temperature‚ turbidity‚ conductivity‚ flow rate‚ pH‚ and GPS. The location where we conducted the tests was White Rock Creek. It was in between lots of trees and it was on a slope. The biotic factors located in the creek were moss‚ algae‚ trees‚ grass‚ minnows‚ spiders‚ and
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actual physical instruments. The objective of developing a virtual interface that acquires data from physical instrument (pH probe) used in the monitoring of a chemical process (in our case an acid base titration and a saponification reaction). The acquired data is processed offline and analyzed for further calculations. Key Words: -Virtual interface‚ Saponification Reaction‚ pH probe‚ etc. I. INTRODUCTION A LabVIEW program consists of one or more virtual instruments (VIs). Virtual instruments are
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