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Chem 112 Week of March 14-18 Notes

by: Rebecca Plummer

Chem 112 Week of March 14-18 Notes Chem 112

Marketplace > Pennsylvania State University > Chemistry > Chem 112 > Chem 112 Week of March 14 18 Notes
Rebecca Plummer
Penn State
GPA 3.11

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About this Document

These notes cover the basics of acids and bases that we went over. There are a few equations you will need to know and some general concepts to think about.
General Chemistry
Dr. Raymond Shaak
Class Notes
25 ?




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This 1 page Class Notes was uploaded by Rebecca Plummer on Saturday March 19, 2016. The Class Notes belongs to Chem 112 at Pennsylvania State University taught by Dr. Raymond Shaak in Spring 2016. Since its upload, it has received 13 views. For similar materials see General Chemistry in Chemistry at Pennsylvania State University.

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Date Created: 03/19/16
Rebecca Plummer Dr. Raymond Schaak 3/18/16 Acids and Bases  Bronsted-Lowry Acid: Acids donate protons (H ) + +  Bronsted-Lowry Base: Bases accept protons (H )  Strong acids and bases completely dissociate in water  Weak acids and bases dissociate in water too but not completely  Neutral substances do not dissociate at all in water  Strong acids have a low pH value (1, 2, 3…)  Strong bases have a high pH value (12, 13, 14…)  Neutral substances have a pH of 7 + - pH = -log [H ] pOH = -log [OH ]  pH is the negative log of the concentration of the H ions -  pOH is the negative log of the concentration of the OH ions  When looking for the pOH when you only have H ions, calculate the pH and then subtract that number by 14.  Ka: equilibrium constant for acids o K ia directly proportional to pH  As pH increases, K aaso increases  Large K as related to a stronger weak acid  pK a -log (K ) a o used to express the strength of acids o pK ia inversely proportional to pH and K a  As pK ancreases, pH decreases  Smaller pK ia related to a stronger weak acid  Conjugate Acids and Bases o K aad K (ebuilibrium constant for bases) are inversely proportional Kw= K ∙aK b pK w pK + pa b K w [H ][OH ] -  Ions with barely any acidity or basicity are spectator ions  Amphoteric: species that can be an acid or a base


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