
NDS11 Chimie
Authored by Château Château Eğitim
Chemistry
KG - University
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8 questions
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1.
OPEN ENDED QUESTION
3 mins • Ungraded
Déterminez l'expression de la constante d'équilibre pour les réactions suivantes:
a) C(s)+CO2(g) ---> 2CO(g)
b) NH3(g) + H2O(l) ----> NH4+(aq) + OH-(aq)
c) BaCO3(s) ---> BaO(s)+CO2(g)
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2.
OPEN ENDED QUESTION
3 mins • Ungraded
Pour la réaction 2SO2(g)+O2(g) ---> 2SO3(g) Ke est 900. Trouver Ke pour la réaction
SO2(g) +1/2 O2(g) ---> SO3(g)
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3.
OPEN ENDED QUESTION
3 mins • Ungraded
X2(g) + 2Y2(g) ----> 2 XY2(g) Ke1= 80
XY(g) + 1/2Y2(g) ----> XY2(g) Ke2= 8
X2(g) + Y2(g) ---> 2 X Y(g) Ke3=?
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4.
OPEN ENDED QUESTION
3 mins • Ungraded
2XY(g) --->X2(g) + Y2(g) pour la réaction la constante d'équilibre est 16. Dans un récipient de 1 litre on met 0,9 mole de XY. Quelle sera la concentration de XY à l’équlibre ?
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5.
OPEN ENDED QUESTION
3 mins • Ungraded
A partir de 1,9 atm de PCl5, on obtient 0,9 atm de PCl3 à l’équilibre. Quelle est la pression partielle de PCl3 et de Cl2 à l’équilibre? Calculez la constante d'équilibre en fonction des pressions partielles Kp. PCl5---> PCl3 + Cl2
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6.
OPEN ENDED QUESTION
3 mins • Ungraded
Pour la réaction SO2(g) + NO2(g) ---> SO3(g) + NO(g) Ke= 0,64 . On introduit 1 mol de chacuns de components dans un récipient de 1 litre. Indiquer si la réaction est en équilibre. Si non, dans quel sans se déplace la réaction? Trouver les concentrations de chaucuns a l'équilibre.
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7.
OPEN ENDED QUESTION
3 mins • Ungraded
Calculer la concentration molaire des ions H+ et des ions OH- et calculer pH et pOH de 100 ml 0,05 mol d'une solution de H2SO4.
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