nMg=4.8/24=0.2 mol
2Mg + O2 -to-> 2MgO
0.2___0.1
VO2= 0.1*22.4=2.24l
Vkk= 2.24*5=11.2l
nMg=4.8:24=0.2 mol
Ta có PTHH:
2Mg+ O2----> 2MgO
2 1 2 (mol)
0.2 0.1 (mol)
=>VO2 : 0.1 x 22.4 =2.24(l)
mà VO2=\(\frac{1}{5}\) Vkk
=>Vkk =2.24 x 5=12.2 (l)