\(n_{Zn}=\dfrac{3,25}{65}=0,05\left(mol\right)\)
\(n_{Al}=\dfrac{2,7}{27}=0,1\left(mol\right)\)
PTHH: \(Zn+Cl_2\underrightarrow{t^o}ZnCl_2\)
_____0,05-->0,05->0,05______(mol)
\(2Al+3Cl_2\underrightarrow{t^o}2AlCl_3\)
0,1--->0,15-->0,1_____________(mol)
=> m = \(0,05.136+0,1.133,5=20,15\left(g\right)\)
\(V_{Cl_2}=\left(0,05+0,15\right).22,4=4,48\left(l\right)\)
Một cách hơi khác nha ;-;
\(n_{Zn}=\dfrac{m}{M}=0,05\left(mol\right)n_{Al}=\dfrac{m}{M}=0,1\left(mol\right)\)
\(Bte:2n_{Cl_2}=2n_{Zn}+3n_{Al}=0,4\)
\(\Rightarrow n_{Cl_2}=0,2\left(mol\right)\)
\(\Rightarrow V_{Cl_2}=n.22,4=4,48\left(l\right)\)
Ta có : \(m_M=m_{KL}+m_{Cl}=3,25+2,7+0,2.71=20,15\left(g\right)\)
Vậy ..