Acide/Base Flashcards

1
Q

comment calculer pH et H3O+?

A
pH = -log [H3O+]
[H3O+] = 10^-pH
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2
Q

Quelles est le produit ionique de l’eau (K H2O)?

A

[H+] x [OH-] = 10^-14

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3
Q

Comment calculer pKa et Ka?

A
pKa = -log Ka
Ka = 10^-pKa
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4
Q

Comment calculer le coefficient de dissociation α?

A

α = h/C
avec h: avancement en mol/L^-1
et C: concentration initiale en mol/L^-1

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5
Q

Comment calculer un acide fort de concentration C0?

A

pH = -log C0

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6
Q

Comment calculer une base forte de concentration C0?

A

pH = 14 + log C0

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7
Q

Comment calculer un acide faible de concentration C0 et de valeur pKa? (dissociation inferieure a 10%)

A

pH = 1/2 x (pKa - log C0)

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8
Q

Comment calculer une base faible de concentration C0 et de valeur pKa?

A

pH = 1/2 x (14 + pKa + log C0)

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9
Q

Soit le couple AH/A-
Mélange d’acide AH et de base A-
Équation d’Henderson-Hasselbach
Comment calculer le pH?

A

pH = pKa + log (A- / AH)

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10
Q

Comment calculer le pH d’une ampholyte en solution

A

pH = (pKa1 + pKa2) / 2

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11
Q

log (1) =

A

0

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12
Q

log (2) =

A

0,3

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13
Q

log (10) =

A

1

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14
Q

log (10^a) =

A

a

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15
Q

square root (2) / 2 =

A

0.7

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