les acides et les bases Flashcards

1
Q

quelle est la formule lors de l’autoprolyse de l’eau ?

A

2H2O = HO- + H3O +

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2
Q

quelle est la formule de concentration des ions oxoniome dans l’eau ?

A

[H3O+] = [HO-] = 10-7 mol/L

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3
Q

définition d’un acide ?

A

une acide et une espèce chimique capable de PERDRE un proton H+

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4
Q

définition d’une bases ?

A

une base est une espèce chimique capable de GAGNER un proton H+

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5
Q

toutes solutions aqueuses vaut ?

A

Ke = [H3O+] x [HO-] = 10-14

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6
Q

formule solution acide ?

A

[H3O+] > [HO-]
[H3O+] > 10-7 mol/L

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7
Q

formule solution neutre ?

A

[H3O +] = [HO] = 10-7 mol/L

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8
Q

formule solution basique?

A

[H3O+] < [HO-]
[H3O+ ] < 10-7 mol/L

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9
Q

formule qui définit le pH ?

A

pH = -log [H3O+]
[H3O+] = 10-14

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10
Q

reaction avec une acide ?

A

AH + H2O -> A- + H3O+

acide fort : pH = -log C
acide faible : pH = 14 + log C

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11
Q

réaction avec une base ?

A

B + H2O -> BH+ + HO-

pH =14+ jog C

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