a) \(CO_2+2NaOH\rightarrow Na_2CO_3+H_2O\)
b) \(n_{CO_2}=\dfrac{1,12}{22,4}=0,05\left(mol\right)\)
Theo PT: \(n_{NaOH}=2n_{CO_2}=0,1\left(mol\right)\)
=> \(CM_{NaOH}=\dfrac{0,1}{0,1}=1M\)
c) Sửa đề DNaOH = 1,2g/ml
\(m_{ddsaupu}=0,05.44+100.1,2=122,2\left(g\right)\)
\(n_{Na_2CO_3}=n_{CO_2}=0,05\left(mol\right)\)
=> \(C\%_{Na_2CO_3}=\dfrac{0,05.106}{122,2}.100=4,34\%\)