'Conjugate acid' diaporamas de présentation

Chapter 18

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2013

Chemistry NCEA L3 3.6 Aqueous Systems. 2013. Achievement Criteria. Demonstrate understanding of equilibrium principles in aqueous systems Aqueous systems are limited to those involving sparingly soluble ionic solids and acidic and basic solutions (in which proton transfer occurs).

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Alkyl halides are organic molecules containing a halogen atom bonded to an sp 3 hybridized carbon atom.

Alkyl Halides and Nucleophilic Substitution. Introduction to Alkyl Halides:. Alkyl halides are organic molecules containing a halogen atom bonded to an sp 3 hybridized carbon atom.

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Acid-Base Titrations

Acid-Base Titrations. Introduction to Acids and Bases. Chapter 8. There are three (3) definitions of acids and bases: 1. Arrhenius, 2. Bronsted -Lowry and 3. Lewis. There are three (3) definitions of acids and bases: 1. Arrhenius, 2. Bronsted -Lowry and 3. Lewis. base. acid. acid. base.

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22.4 Measures of Amine Basicity

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Announcements & Agenda (02/26/07)

Announcements & Agenda (02/26/07). You should be reading Ch 10! Quiz on Friday! Bring resource CD to lab! Today Acid & base reactions (8.6) Conjugate acids & bases (8.2), buffers (8.7) Introduction to Organic Chemistry (Ch 10).

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Acids and Bases

Acids and Bases. Arrhenius Bronsted-Lowry Lewis. Definitions of Acids/Bases. Measuring Acid Strength Ka. Acid Strength defined by pK a. Dissociation in H 2 O Arrhenius Acid forms H 3 O + Bronsted-Lowry Acid donates a H +. Resonance Stabilization. Stronger Acid Controls Equilibrium.

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FLAVONOID FERVER

FLAVONOID FERVER. And the Charm of Chalcones. Wine and the French paradox. The French are 2.5 times less likely than Americans to die of coronary heart disease. Regular consumption of red wine is linked to reduced clumping of platelets; improved cardiovascular risk profile;

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Acids and Bases

Chapter 15. Acids and Bases. ACIDS. Examples of acids: Vinegar Lemon Juice Soft Drink Battery Acid Stomach Acid Apple Juice Black Tea. ACIDS produce solutions that:. Taste sour. Turn blue litmus paper red. Conduct electricity. React with metals to liberate a hydrogen gas.

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Acids and Bases

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Calculating pH from K a

Calculating pH from K a. The K a for niacin (C 5 H 4 NCOOH) is 1.6 x 10 -5 . What is the pH of a 0.010 M solution of niacin?. C 5 H 4 NCOOH C 5 H 4 NCOO - ( aq ) + H + ( aq ) initial: 0.010 M 0 M 0 M change: - x M +x M +x M

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Buffers and Acid/Base Titration

Buffers and Acid/Base Titration. Reaction of Weak Bases with Water. The base reacts with water, producing its conjugate acid and hydroxide ion:. CH 3 NH 2 + H 2 O ? CH 3 NH 3 + + OH - K b = 4.38 x 10 -4. K b for Some Common Weak Bases.

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Acids and Bases

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Unless otherwise stated, all images in this file have been reproduced from:

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Chapter 8 Acids and Bases

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Explaining the Properties of Acids & Bases

SCH4U - Chemistry, Gr. 12, University Prep. Explaining the Properties of Acids & Bases. Common Properties of Acids & Bases. Acids & bases are defined in terms of their structure and the ions produced when they dissolve in water. Explains acid-base reactions and neutralization.

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SAMPLE EXERCISE 16.16 Calculating K a or K b for a Conjugate Acid-Base Pair

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Salts as Acids and Bases

Salts as Acids and Bases. Assuming that only one ion affects the pH. Salt Ionic Compound Dissolves Ions Slosh Ions as Acids Ions as Bases. Cations Sloshing Anions Sloshing. Salts that produce Neutral Solutions. Salts that consist of: Cations of strong bases (K + , Na + , etc.)

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Chapter 14 Questions

Chapter 14 Questions. The presence of what ion is necessary to have an acid? A base? H 3 PO 4 , which contains three hydrogen atoms per molecule, is a weak acid, whereas HCl which contains only one hydrogen atom per molecule, is a strong acid. Explain why.

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