a, Ta có: \(n_{SO_2}=\dfrac{13,44}{22,4}=0,6\left(mol\right)\)
\(n_{KOH}=\dfrac{44,8}{56}=0,8\left(mol\right)\)
\(\Rightarrow\dfrac{n_{KOH}}{n_{SO_2}}=1,3333\)
⇒ Dd sau pư gồm: K2SO3 và KHSO3.
b, PT: \(SO_2+2KOH\rightarrow K_2SO_3+H_2O\)
\(SO_2+KOH\rightarrow KHSO_3\)
Giả sử: \(\left\{{}\begin{matrix}n_{K_2SO_3}=x\left(mol\right)\\n_{KHSO_3}=y\left(mol\right)\end{matrix}\right.\)
Theo PT: \(\left\{{}\begin{matrix}x+y=0,6\\2x+y=0,8\end{matrix}\right.\) \(\Rightarrow\left\{{}\begin{matrix}x=0,2\left(mol\right)\\y=0,4\left(mol\right)\end{matrix}\right.\)
\(\Rightarrow\left\{{}\begin{matrix}m_{K_2SO_3}=0,2.158=31,6\left(g\right)\\m_{KHSO_3}=0,4.120=48\left(g\right)\end{matrix}\right.\)
Bạn tham khảo nhé!
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