nNa= 0,1(mol); nMg=0,1(mol)
PTHH: 4 Na + O2 -to-> 2 Na2O
Mg + 1/2 O2 -to-> MgO
=> nO2(dùng)= 1/4. 0,1+ 1/2. 0,1= 0,075(mol)
=>V(O2,đktc)=0,075. 22,4= 0,168(l)
nNa = 2.3/23 = 0.1 (mol)
4Na + 2O2 -to-> 2Na2O
0.1.......0.05
VO2 = 0.05 * 22.4 = 1.12 (l)
nMg = 2.4/24 = 0.1 (mol)
2Mg + O2 -to-> 2MgO
0.1.......0.05
VO2 = 0.05*22.4 = 1.12 (l)