C1.7 Simple Equilibria and Acid-Base Reactions

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12 Terms

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Dynamic equilibrium

in a closed system where the rate of the forwards reaction is equal to the backwards reaction so that the concentrations of reactants and products appears to remain constant (NOT the same)

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Le Chatelier’s Principle

In a system at equilbrium, the position of equilibrium will shift to oppose any change applied to the system

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Kc =

Products/Reactants to the power of their coefficients

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Bronsted-Lowry acid

a proton donor

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Bronsted-Lowry base

a proton acceptor

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pH =

-log[H+(aq)]

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Strong acid

fully dissociates

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Weak acid

partially dissociates

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Methyl orange colours

Acid = pink, Alkali = yellow

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Thymolphthalein colours

Acid = colourless, Alkali = blue

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Phenolphthalein colours

Acid = colourless, Alkali = pink

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Litmus colours

Acid = red, Alkali = blue