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A-level chemistry year 2 > Acid-base Equilibria Ii > Flashcards

Acid-base Equilibria Ii Flashcards

1
Q

What is Ka

A

The acid dissociation constant

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2
Q

Ka for a weak aqueous acid

A

Ka= [H+][A-] / [HA]

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3
Q

Assumptions for Ka (weak acid)

A
  • [HA]start = [HA]equilibrium
  • [H+] = [A-]
  • reaction occurs at standard temperature (298k)
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4
Q

What is the ionic product of water shown by

A

Kw = [H+][OH]

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5
Q

Numerical value for Kw

A

1.0 x 10^-14 mol2dm-6

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6
Q

pKw =

A

-log (Kw)

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A-level chemistry year 2 (8 decks)

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