Bonbon.
28 Gel hydroalcoolique
APP: Maitriser le vocabulaire du cours
VAL: Appliquer un...
Physics, 02.11.2020 23:30 eggoysters
Bonbon.
28 Gel hydroalcoolique
APP: Maitriser le vocabulaire du cours
VAL: Appliquer une relation entre des grandeurs physiques
Le gel hydroalcoolique
La formule de la solution hydroalcoolique développée
par
D. Pittet est mise Ă disposition par l'Organisation mondiale
de la santé. Le mélange de liquides est le suivant (pour
10 L finaux): 8,333 L d'Ă©thanol Ă 96 %, 417 mL de solution
de peroxyde d'hydrogÚne à 3%, 174 g de glycérol à 98 % et
le reste est complété avec de l'eau distillée.
1. Identifier le solvant dans la composition du gel
hydroalcoolique.
2. Quelle masse d'éthanol à 96 % est utilisée pour 10 L
de solution ?
3. DĂ©terminer la masse volumique (en g/L) du gel.
Données
PĂ©thanol = 0,79 g. cm3;
.
- Peau
âą P
peroxyde
stycérol = 1,3 g/mL;
Answers: 1
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