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Chem-Module 15

QuestionAnswer
Chemical equilibrium The point at which both the forward and reverse reactions in a chemical equation have equal reaction rates: When this occurs, the amount of each substance in the chemical reaction will not change, despite the fact that both reactions still proceed.
Equilibrium constant K= [C]c[D]d/[A]a[B]b
When K is large, the equilibrium is weighted toward the ________ side of the equation products
When K is small, the equilibrium is weighted toward the _______ side of the equation reactants
When K is near unity, the equilibrium is __________ between reactants and the products balanced
When a _______ appears in a chemical equilibrium, it is not included in Equation 15.2 solid
When a ______ appears in a chemical equation, we do not include it in Equation 15.2. This applies only to the _______ phase; it does not apply to the aqueous phase. liquid
Le Chatelier's Principle When a stress (such as a change in concentration, pressure, or temperature) is applied to an equilibrium, the reaction will shift in a way that relieves the stress and restores equilibrium.
Le Chatelier's principles ignores _______ and _______ as a source of stress to the equilibrium. solids and liquids
When an equilibrium is subjected to an increase in pressure, it will shift _______ from the side with the largest number of gas molecules. away
If pressure decreases, the equilibrium will shift ________ the side with the largest number of gas molecules. towards
When temperatures is raised, and equilibrium will shift ______ from the side of the equation that contains energy. away
When temperatures is lowered, the reaction will shift _________ the side the contains energy. towards
Acid ionization reaction The reaction in which and H+ separates from an acid molecule so that it can be donated in another reaction.
Strong acid An acid in which its acid ionization reaction works very well.
Weak acid An acid in which its acid ionization reaction does not produce many H+ ions.
Acid ionization constant The equilibrium constant for an acid's ionization reaction
Acid ionization constant Ka
If the ionization constant of an acid is large, the acid is considered a ______ _______. strong acid
If the ionization constant is not large, the acid is considered a _____ _____. weak acid
pH stands for potential hydrogen
Solutions with pH 0-1.9 are considered strongly acidic
Solutions with pH 2-6.9 are considered weakly acidic
Solutions with pH 7 are considered neutral
Solutions with pH 7.1-12 are considered weakly basic
Solution with pH 12.1-14 are considered strongly basic
Created by: akikoandpoog