\(n_{SO_2}=0,3\left(mol\right)\)
\(m_{Ca\left(OH\right)_2}=200.18,5=37\left(g\right)\Rightarrow n_{Ca\left(OH\right)_2}=\dfrac{37}{74}=0,5\left(mol\right)\)
\(\Rightarrow\dfrac{n_{SO_2}}{n_{Ca\left(OH\right)_2}}=\dfrac{0,3}{0,5}=0,6< 1\)
=> xảy ra pư tạo muối TH và Ca(OH)2 dư
\(SO_2\left(0,3\right)+Ca\left(OH\right)_2\left(0,3\right)\rightarrow CaSO_3\left(0,3\right)+H_2O\)
\(m_B=m_{CaSO_3}=0,3.120=36\left(g\right)\)
ddA là Ca(OH)2 dư
\(m_{Ca\left(OH\right)_2dư}=\left(0,5-0,3\right)74=14,8\left(g\right)\)
\(m_{ddsaupư}=m_{SO_2}+m_{ddCa\left(OH\right)_2}=0,3.64+200=219,2\left(g\right)\)
\(\Rightarrow C\%dd_A=\dfrac{14,8}{219,2}.100\%\approx6,75\%\)
\(n_{SO_2}=0,3mol\)
\(n_{Ca\left(OH\right)_2}=0,5\left(mol\right)\)
\(\Rightarrow\dfrac{n_{SO_2}}{n_{Ca\left(OH\right)_2}}=\dfrac{0,3}{0,5}=0,6< 1\)
=> xảy ra pư tạo muối TH và Ca(OH)2 dư
\(SO_2\left(0,3\right)+Ca\left(OH\right)_2\left(0,3\right)\rightarrow CaSO_3\left(0,3\right)+H_2O\)
\(m_B=36\left(g\right)\)
\(m_{ddsaupư}=m_{SO_2}+m_{ddCa\left(OH\right)_2}-m_{CaSO_3}\)
\(=0,3.64+200-36=183,2\left(g\right)\)
\(\Rightarrow C\%ddA=\dfrac{14,8}{183,2}.100\%\approx8\%\)