CHEM 211 Chapter Notes - Chapter 3.5-3.10: Electronegativity, Conjugate Acid, Acid Dissociation Constant
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19 Oct 2016
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Chapter 3. 5: using curved arrows to illustrate reactions. Curved arrow begins with a covalent bond or an unshared electron pair: they end at a point of electron de ciency. Chapter 3. 6: the strength of bronsted-lowry acids and bases: ka and pka. Acid strength is characterized by it"s acidity constant (ka) or pka value. Equilibrium constant = keq: keq = products over reactants. Ka = acids over bases: a large ka means the acid is strong, a low ka means the acid is weak, a low pka means the acid is strong, a high pka means the acid is weak. The stronger the acid, the weaker the conjugate base. The weaker the acid, the stronger the conjugate base: we can relate the strength of a base to the pka of its conjugate acid. Strong conjugate bases = high pka acid, and vice versa. Chapter 3. 7: how to predict the outcome of acid-base reactions.
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