Ta có: \(n_{CO_2}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\)
\(n_{KOH}=2.\dfrac{100}{1000}=0,2\left(mol\right)\)
Ta có: \(T=\dfrac{n_{KOH}}{n_{CO_2}}=\dfrac{0,2}{0,2}=1\)
Vậy, ta có PTHH:
\(CO_2+KOH--->KHCO_3\)
Theo PT: \(n_{KHCO_3}=n_{KOH}=0,2\left(mol\right)\)
Ta có: \(V_{dd_{KHCO_3}}=V_{dd_{KOH}}=100\left(ml\right)=0,1\left(lít\right)\)
\(\Rightarrow C_{M_{KHCO_3}}=\dfrac{0,2}{0,1}=2M\)