CH2 => Produits d'entretient et hygiène Flashcards

1
Q

Définition Solution ?

A

Mélange homogène d’un soluté et d’un solvant

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2
Q

Définition soluté ?

A

Espèce chimique dissoute dans un solvant

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3
Q

Définition solvant ?

A

Toute substance liquide capable d’en dissoudre une autre

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4
Q

Définition acide ?

A

Espèce chimique capable de céder un proton (ion H+)

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5
Q

Définition base ?

A

Espèce chimique capable de capter un proton (ion H+)

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6
Q

Formule acide/base ?

A

Acide = base + H+

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7
Q

Formule réaction acide/base ?

A

AH + B- = A- + BH

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8
Q

Formule réactions acide/base de l’eau ?

A

2H2O <=> H3O+ + HO-

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9
Q

Produit ionique de l’eau ?

A

Ke = [H3O+] * [OH-] = 10^-14

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10
Q

Qu’est-ce que le pH ?

A
  • Potentiel Hydrogène

* Mesure de l’acidité ou basicité

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11
Q

Formule du pH ?

A

pH = -log[H3O+]

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12
Q

Formule [H3O+] ?

A

[H3O+] = 10^-pH

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13
Q

Qu’est-ce que le pKa ?

A

Valeur qui indique la force d’un acide

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14
Q

Formule pKa ?

A

pKa = -log(Ka) où Ka = ( [base] * [H3O+] ) / ( [acide] )

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