Zn + 2HCl → ZnCl2 + H2
\(n_{Zn}=\dfrac{6,5}{65}=0,1\left(mol\right)\)
Theo PT: \(n_{HCl}=2n_{Zn}=2\times0,1=0,2\left(mol\right)\)
\(\Rightarrow V_{ddHCl}=\dfrac{0,2}{1}=0,2\left(l\right)=200\left(ml\right)\)
\(\Rightarrow m_{ddHCl}=200\times1,1=220\left(g\right)\)
Theo PT: \(n_{H_2}=n_{Zn}=0,1\left(mol\right)\)
\(\Rightarrow m_{H_2}=0,1\times2=0,2\left(g\right)\)
\(\Sigma m_{dd}=220+6,5-0,2=226,3\left(g\right)\)
Theo PT: \(n_{ZnCl_2}=n_{Zn}=0,1\left(mol\right)\)
\(\Rightarrow m_{ZnCl_2}=0,1\times136=13,6\left(g\right)\)
\(\Rightarrow C\%_{ZnCl_2}=\dfrac{13,6}{226,3}\times100\%=6,01\%\)
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