Question

Prin reactia ferului cu vaporii de apa se obtin hidrogen si oxid feroferic (Fe3 O4)
mFe=?
mH2O=?
mH2=178.6

Answer 1

reactia chimica:

3Fe +4H2O->Fe3O4 + 4H2

Voi lucra in moli....nH2=m/M=178,6/2=89,3 moli

3 moli Fe......4moliH2
xmoli Fe........89,3moli H2
x=89,3*3/4=66,975 moli Fe
mFe=n*M=66,975*56=3750,6grame Fe(3,75kg)

4moli H2O......4moli H2
ymoli H2O......89,3moli H2
y=89,3moli H2O
mH2O=n*M=89,3*18=1607,4grame H2O(1,6kg)