\(V_{dd_{HCl\left(18.25\%\right)}}=a\left(ml\right)\)
\(\Rightarrow m_{dd_{HCl}}=1.2a\left(g\right)\)
\(\Rightarrow m_{HCl}=1.2a\cdot18.25\%=0.219a\left(g\right)\)
\(\Rightarrow n_{HCl}=0.006a\left(mol\right)\)
\(V_{dd_{HCl\left(13\%\right)}}=b\left(ml\right)\)
\(\Rightarrow m_{dd_{HCl}}=1.123b\left(g\right)\)
\(\Rightarrow m_{HCl}=1.123b\cdot13\%=0.14625b\left(g\right)\)
\(\Rightarrow n_{HCl}=0.004b\left(mol\right)\)
\(KĐ:\)
\(0.006a+0.004b=4.5\cdot\left(0.001a+0.001b\right)\)
\(\Leftrightarrow0.006a+0.004b-0.0045a-0.0045b=0\)
\(\Leftrightarrow0.0015a-0.0005b=0\)
\(\Leftrightarrow\dfrac{a}{b}=\dfrac{1}{3}\)
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