Составить уравнение электронного : 1)nacl=na+cl2 2)nacl=cl2+h2+naoh 3)feo+h2=h2o+fe 4)zno+c=co+zn 5)cr2o3+nh3=cr+h2o+n2 6)cr2o3+al=al2o3+cr !

1)Na(+1)cl(-1)=Na(0)+Cl2(0) Na(+1) +1e = Na(0) | 1 | 2 2Cl(-1) -1e = 2Cl(0) | 2 | 1 2NaCl=2Na+Cl2 2)2Na(+1)cl(-1) +2H2(+1)O(-2)=Cl2(0)+H2(0)+2Na(+1)O(-2)H(+1) 2Cl(-1) -1e = 2Cl(0) | 2 | 1 2H(+1) +1e = 2H(0) | 2 | 1 3)Fe(+2)O(-2)+H2(0)=H2(+1)O(-2)+Fe(0) Fe(+2) +2e = Fe(0) | 2 | 1 2H(0) -1e = 2H(+1) | 2 | 1 4)Zn(+2)O(-2)+C(0)=C(+2)O(-2)+Zn(0) Zn(+2) +2e = Zn(0) | 2 | 1 C(0) -2e = C(+2) | 2 | 1 5)Cr2(+3)O3(-2)+2N(-3)H3(+1)=2Cr(0)+3H2(+1)O(-2)+N2(0) 2Cr(+3) +3e = 2Cr(0) | 6 | 1 2N(-3) -3e = 2N(0) | 6 | 1 6)Cr2(+3)O3(-2)+2Al(0)=Al2(+3)O3(-2)+2Cr(0) 2Cr(+3) +3e = 2Cr(0) | 6 | 1 2Al(0) -3e = 2Al(+3) | 6 | 1