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nolenk's picture

  Koliko se oslobadja centimetara kubnih u reakciji 2 gr Na sa etanolom?

milicaradenkovic's picture

2Na+2CH3CH2OH--------------------->2CH3CH2ONa+H2

n(Na)=m/Mr=2/23=0.087 mol

n(H2)=n(Na)/2=0.087/2=0.0435 mol

V(H2)=n(H2)*Vm=0.0435*22.4=0.9744 dm3