test 19 mai (p. 56 à 59) Flashcards

1
Q

que donne un acide (ions)?

A

H+

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2
Q

que donne une base (ions)?

A

OH-

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3
Q

acide carboxyliques

A

se terminent par COOH

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4
Q

que peut faire varier la constante d’équilibre (Ka ou Kb)?

A

la température

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5
Q

plus la valeur de Ka ou Kb est élevée

A

plus il y a de produits

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6
Q

plus la valeur de Ka ou Kb est petite

A

plus il y a de réactifs

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7
Q

si la valeur de Ka ou Kb est entre 10^-3 et 10^3

A

il y a à peu près autant de produits que de réactifs

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8
Q

acide fort

A

HCl

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9
Q

dans l’eau pure: (H+) = (OH-) =

A

1 x 10^-7 M

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10
Q

dans l’eau: Kc (ou Ke) = (H+) x (OH-) =

A

1 x 10^-14 M

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11
Q

pH

A

indicateur de l’acidité

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12
Q

pH =

A

-log(H+)

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13
Q

pOH=

A

-log(OH-)

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14
Q

10^-pH=

A

(H+)

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15
Q

10^-pOH=

A

(OH-)

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