
estequiometria i reaccions
Authored by Joan Domingo
Chemistry
9th - 12th Grade
Used 1+ times

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7 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
CH4 + O2 --> CO2 + H2O és una reacció de combustió.
Sí
No
A vegades
2.
MULTIPLE CHOICE QUESTION
5 mins • 3 pts
De la següent reacció
CH4 + O2 --> CO2 + H2O
Quants litres de CO2 es produiran en la combustió de 50kg de metà a pressió 1 atmosfera i temperatura 310K?
3125 litres
79437,5 litres
122,9 litres
3.
MULTIPLE CHOICE QUESTION
5 mins • 4 pts
De la següent reacció
CH4 + O2 --> CO2 + H2O
Quin volum d'aire (21% d'oxigen) s'haurà consumit en la combustió de 50kg de metà a pressió 1 atmosfera i temperatura 310K?
189136,9 litres d'aire
274404'7 litres d'aire
292,7 litres d'aire
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Els coeficients estequiomètrics de la reacció de neutralització
NaOH + HCl --> NaCl + H2O
són
5.
FILL IN THE BLANK QUESTION
2 mins • 2 pts
Els coeficients estequiomètrics de la reacció de substitució
Al + H2SO4 --> Al2(SO4)3 + H2
són
6.
MULTIPLE CHOICE QUESTION
5 mins • 3 pts
Si es volen produir 100 litres de CO2 a 1 atmosfera i 310K, quants grams de metà són necessaris?
CH4 + O2 --> CO2 + H2O
200 grams
62,9 grams
150'6 g
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
La reacció CH4 + O2 --> CO2 + H2O és una reacció exotèrmica?
Sí
No
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