Acide / Base Flashcards

1
Q

definition

A

AH acide : donneur de protons
A- base : accepteur
ph = -log ( concentrat° de H3O+)
C (H3O+) = 10^-pH

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2
Q

Acide fort de concentration Co

A

pH = -log Co

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3
Q

Base fort de concentration Co

A

pH = 14 + log Co

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4
Q

Acide faible con=Co et de valeur pka

A

pH = 1/2 (pKa -log Co)

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5
Q

Base faible con=Co et de valeur pka

A

pH = 1/2 (14 + pKa + log Co)

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6
Q

soit le couple AH/A-
melange acide AH et base A-
equation d’henderson-hasselback

A

pH = pka + log (A-/AH)

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7
Q

ampholyte en solution

A

pH = (pKa1 + pKa 2) / 2

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8
Q

Autoprolyse de l’eau

A

K(H20) = 10^-14

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9
Q

coefficient de dissociation

A

alpha = avancement / concentration initial

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