Rates, Equilibrium and pH

chemistry OCR

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What is dissociation?
When an acid releases H+ ions in aqueous solution
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How does the rate determining step effect the rate of the reaction
the rate is only as fast as the rate determining step
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when Kc > 1 does the reaction favours the products or the reactants?
products
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What is an example of a tribasic acid?
H3PO4
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For strong acids, why does [H+] = [HA] ?
because the acid dissociates completely
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What is a buffer?
a mixture that minimises the changes in pH on addition of small amounts of acid and alkali
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What is the end point?
point at which the concentrations of the weak acid and the conjugate base of an indicator are equal
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what is the equation for Kc (where A and B are reactants, and C and D are products)
Kc = ( [C]^c x [D]^d ) / ( [A]^a x [B]^b )
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Other cards in this set

Card 2

Front

How does the rate determining step effect the rate of the reaction

Back

the rate is only as fast as the rate determining step

Card 3

Front

when Kc > 1 does the reaction favours the products or the reactants?

Back

Preview of the front of card 3

Card 4

Front

What is an example of a tribasic acid?

Back

Preview of the front of card 4

Card 5

Front

For strong acids, why does [H+] = [HA] ?

Back

Preview of the front of card 5
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Comments

nehal

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love it!!!

kayleey

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very helpful, great revision tool!

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