\(m_{H_2}=\dfrac{65}{32.5}=2\left(g\right)\)
\(n_{H_2}=\dfrac{2}{2}=1\left(mol\right)\)
Đặt CT axit là : \(H_nX\)
\(2A+2aH_nX\rightarrow2AX_a+anH_2\)
\(\dfrac{2}{an}....\dfrac{2}{n}.......\dfrac{2}{an}........1\)
\(m_A=\dfrac{2}{an}\cdot A=65\left(g\right)\)
\(\Leftrightarrow2A-65an=0\left(1\right)\)
\(m_{axit}=2\cdot69-65=73\left(g\right)\)
\(\Leftrightarrow\dfrac{2}{n}\cdot\left(n+X\right)=73\)
\(\Leftrightarrow X=35.5n\)
\(BL:n=1\rightarrow X=35.5\)
\(\Rightarrow HCl\)
\(\left(1\right):\)
\(2A-65a=0\)
\(A=32.5a\)
\(BL:\)
\(\)\(a=2\Rightarrow A=65\)
\(A:Zn\)
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