\(PTHH:2Cu+O_2\rightarrow2CuO\)
\(CuO+2HCl\rightarrow CuCl_2+H_2O\)
Ta có:
\(n_{Cu}=\frac{51,2}{64}=0,8\left(mol\right)\)
\(\Rightarrow n_{CuO\left(lt\right)}=0,8\left(mol\right)\)
\(\left\{{}\begin{matrix}n_{HCl}=0,6.2=1,2\left(mol\right)\\n_{CuO\left(tt\right)}=\frac{1,2}{2}=0,6\left(mol\right)\end{matrix}\right.\)
\(\Rightarrow H=\frac{0,6}{0,8}.100\%=75\%\)
\(\Rightarrow m=0,6.80+0,2.64=60,8\left(g\right)\)