Maseni udio etanola u homogenoj smjesi etanol-voda iznosi 0,92. U 50 g ove smjese dodata je dovoljna kolicina natrijuma. Izracunaj ukupan broj molekula vodonika koji se izdvaja pri reackiji natrijuma sa ovom smjesom!!!
2 C2H5OH + 2 Na --> 2C2H5ONa + H2 46g.........................................................x 2*46......................................................6*1023 x=3*1023 molekula H2 2H2O + 2Na --> 2NaOH + H2 4g............................................y 36...........................................6*1023 y=6,67*1022 molekula H2
N(H2)=x+y=3,67*1023 molekula
"A new scientific truth does not triumph by convincing opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it"Max Planck
2 C2H5OH + 2 Na --> 2C2H5ONa
2 C2H5OH + 2 Na --> 2C2H5ONa + H2
46g.........................................................x
2*46......................................................6*1023
x=3*1023 molekula H2
2H2O + 2Na --> 2NaOH + H2
4g............................................y
36...........................................6*1023
y=6,67*1022 molekula H2
N(H2)=x+y=3,67*1023 molekula
"A new scientific truth does not triumph by convincing opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it" Max Planck
Hvala puno!!!!
Hvala puno!!!!