'Buffer capacity' diaporamas de présentation

George Mason University General Chemistry 212 Chapter 19 Ionic Equilibria Acknowledgements

George Mason University General Chemistry 212 Chapter 19 Ionic Equilibria Acknowledgements Course Text: Chemistry: the Molecular Nature of Matter and Change, 6 th ed, 2011, Martin S. Silberberg, McGraw-Hill

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Chapter 3

Chapter 3. ACID, SALINE, AND SODIC SOILS. Why study acid, saline, and sodic soils?. Acid, saline, and sodic soils have unique chemical and physical properties that influence how plants grow.

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Chemistry

Chemistry. Ionic equilibrium-III. Session Objectives. Session Objectives. Hydrolysis of salts Buffer and buffer capacity. Buffer solution. Types of buffer solution. a. Acidic buffer:. CH 3 COOH and CH 3 COONa. b. Basic buffer:. NH 4 OH and NH 4 Cl. c. Salt or neutral buffer:.

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Chapter 19 - Neutralization

Chapter 19 - Neutralization. Section 19.1 Neutralization Reactions. OBJECTIVES: Explain how acid-base titration is used to calculate the concentration of an acid or a base. Section 19.1 Neutralization Reactions. OBJECTIVES: Explain the concept of equivalence in neutralization reactions.

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Aqueous Ionic Solutions and Equilibrium

Aqueous Ionic Solutions and Equilibrium. Chapter 19. Common Ion Effect. Shift in equilibrium that occurs because of the addition of an ion already involved in the equilibrium reaction. What happens to the equilibrium if 0.10 M NaF is added?.

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The solubility of a partially soluble salt is decreased when a common ion is added.

The Common Ion Effect. The solubility of a partially soluble salt is decreased when a common ion is added. Consider the equilibrium established when acetic acid, HC 2 H 3 O 2 , is added to water.

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Chapter 8 & 9

Chapter 8 & 9. Acids, Bases & Buffers. Chapter 8 Introducing Acids & Bases. Water pH (Acid rain) in the USA in 2001. Conjugate acids & bases. P172. Relation between [H + ], [OH - ], and pH?. P174. 8-3 Strengths of acids & bases. Strong Acids and Bases

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4-4-2011

4-4-2011. Choosing a Buffer. Pick a buffer whose acid has a pK a near the pH that you want Must consider pH and capacity Buffer Capacity: Not all buffers resist changes in pH by the same extent. The effectiveness of a buffer to resist changes in pH is called the buffer capacity.

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Chapter 15

Chapter 15. Applications of Aqueous Equilibria. The Common-Ion Effect. Common-Ion Effect : The shift in the position of an equilibrium on addition of a substance that provides an ion in common with one of the ions already involved in the equilibrium. CH 3 CO 2 H( aq ) + H 2 O( l ).

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Chem 1310: Introduction to physical chemistry Part 5: Buffers and solubility

Chem 1310: Introduction to physical chemistry Part 5: Buffers and solubility. Peter H.M. Budzelaar. Buffers. Water has a very small [H 3 O + ] (10 -7 ). Adding just a little bit of acid or base can change the pH drastically. Add 0.001 M HCl: pH goes from 7 to 3!

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Chapter 15

Chapter 15. Applications of Aqueous Equilibria. The Common-Ion Effect. Common-Ion Effect : The shift in the position of an equilibrium on addition of a substance that provides an ion in common with one of the ions already involved in the equilibrium

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Beijing Olympics 2008 Logistics information KWEPEK Branch April, 2008

Beijing Olympics 2008 Logistics information KWEPEK Branch April, 2008. Content. Map of Beijing Olympics Venue s Beijing Olympics 2008 Schedule Beijing Paralympics 2008 Schedule Outlook For Restrictions Olympic Restrictions Impact on Logistics (1) Vehicle control

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Arsenic speciation in Soils and Sediment

Arsenic speciation in Soils and Sediment. Myron Georgiadis. Florida International University TAG Meeting February 11, 2004. Backgrounds. Leaching occurs from CCA-Treated Wood into soil and sediments Traditional methods for arsenic analysis in soil - Digestion

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CHEM100_11

CHEM100_11. Lecture #30. Chapter 16. Acid-base equilibrium. Quiz#2: November 25. Chapters to study for the November quiz: 4.4, 20.2 redox reactions 5.1-5.4, 5.6- thermochemistry 10.1-10.8 - gases 15- chemical equilibrium 16.1-16.5 - pH, pOH, strong acids and bases.

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Applications of aqueous equilibria

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Experiment 7 Preparation and Properties of Buffers

Experiment 7 Preparation and Properties of Buffers. Purposes 1. Grasp the properties of buffer solutions and effect factors of buffer capacity 2. Learn the preparation of buffer solution and operation of the measuring pipet 3. Learn to determine the pH with colorimetry and pH-meter.

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??? ???? ?????? ??????. Preparation and Properties of Buffers. UMM AL-QURQ UNIVERSITY Faculty of Medicine Dep. Of BIOCHEMISTRY. Objectives:. To prepare Buffer solutions. To show that the pH of buffer changes on dilution. To show that the buffer capacity varies with ionic strength.

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Titration and Buffers

Titration and Buffers. Buffers Buffers are substances that are able to absorb and release H+ ions keeping the pH in a solution constant. EX: H 3 O + + HCO 3 - g H 2 CO 3 + OH - g H 2 O + HCO 3 -

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Aqueous Equilibria, Part Two

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