Ta có: \(n_{Mg}=\dfrac{2,4}{24}=0,1\left(mol\right)\)
PT: \(Mg+2HCl\rightarrow MgCl_2+H_2\)
_____0,1_____0,2___________0,1 (mol)
a, \(V_{H_2}=0,1.24,79=2,479\left(l\right)\)
b, \(C_{M_{HCl}}=\dfrac{0,2}{1}=0,2\left(M\right)\)
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