\(Mg+Cl_2\rightarrow MgCl_2\)
0,1 0,4
Vì \(n_{Mg}< n_{Cl_2}\) nên tính theo Mg
=>\(n_{MgCl_2}=0.1\left(mol\right)\)
\(m_{MgCl_2}=0.1\left(64+35.5\cdot2\right)=13.5\left(g\right)\)
\(n_{Mg}=\dfrac{2,4}{24}=0,1\left(mol\right)\\ n_{Cl_2}=\dfrac{8,96}{22,4}=0,4\left(mol\right)\\ Mg+Cl_2\rightarrow MgCl_2\)
0,1--------->0,1
Xét tỉ lệ có: \(\dfrac{0,1}{1}< \dfrac{0,4}{1}\Rightarrow Cl_2.dư\)
\(m_{MgCl_2}=0,1.95=9,5\left(g\right)\)