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PTHH: \(SO_2+Ca\left(OH\right)_2\rightarrow CaSO_3+H_2O\)
Ta có: \(n_{SO_2}=\dfrac{0,056}{22,4}=0,0025\left(mol\right)=n_{Ca\left(OH\right)_2}=n_{CaSO_3}\)
\(\Rightarrow\left\{{}\begin{matrix}C_{M_{Ca\left(OH\right)_2}}=\dfrac{0,0025}{0,35}\approx0,007\left(M\right)\\m_{CaSO_3}=0,0025\cdot120=0,3\left(g\right)\end{matrix}\right.\)
\(n_{SO_2}=\dfrac{2,24}{22,4}=0,1\left(mol\right)\\ PTHH:SO_2+Ca\left(OH\right)_2\rightarrow CaSO_3\downarrow+H_2O\\ \Rightarrow n_{CaSO_3}=n_{SO_2}=0,1\left(mol\right)\\ \Rightarrow m_{CaSO_3}=120\cdot0,1=12\left(g\right)\)
\(n_{SO_2}=\dfrac{2,24}{22,4}=0,1\left(mol\right)\)
PTHH: SO2 + Ca(OH)2 → CaSO3 + H2O
Mol: 0,1 0,1
\(m_{CaSO_3}=0,1.120=12\left(g\right)\)
PTHH : `Ba(OH)_2 + SO_2 -> BaSO_3 + H_2O`
`a)`
`600ml = 0,6l`
`n_{SO_2} = (6,72)/(22,4) = 0,3` `mol`
`n_{Ba(OH)_2} = n_{SO_2} = 0,3` `mol`
`C_{M_(Ba(OH)_2)} = (0,3)/(0,6) =0,5` `M`
`b)`
`n_{BaSO_3} = n_{SO_3} = 0,3` `mol`
`m_{BaSO_3} = 0,3 . 217 = 65,1` `gam`
`c)`
PTHH : `Ba(OH)_2 + 2HCl -> BaCl_2 + 2H_2O`
Ta có : `n_{Ba(OH)_2} = 0,3` `mol`
`n_{HCl} = 2 . n_{Ba(OH)_2} = 0,6` `mol`
`V_{HCl} = (0,6)/(3,5) = 6/35` `l`
nSO2 = 0.056/22.4=0.0025 mol
Ca(OH)2 + SO2 --> CaSO3 + H2O
0.0025_____0.0025___0.0025
VddCa(OH)2 = 0.0025/0.5 = 0.005 (l)
mCaSO3 = 0.0025*120 = 0.3 g
c)
nCaSO3 = 24/120 = 0.2 mol
CaSO3 + SO2 + H2O --> Ca(HSO3)2
0.2______0.2
VSO2 = 0.2*22.4=4.48 l
\(n_{SO_2}=\dfrac{2,24}{22,4}=0,1\left(mol\right)\)
PTHH: SO2 + Ca(OH)2 → CaSO3 + H2O
Mol: 0,1 0,1 0,1
\(V_{ddCa\left(OH\right)_2}=\dfrac{0,1}{1}=0,1\left(l\right)\)
\(m_{CaSO_3}=0,1.120=12\left(g\right)\)
Làm ở điều kiện tiêu chuẩn nhé
Giải:
\(n_{SO_2}=\dfrac{56}{1000}:22,4=0,0025\left(mol\right)\)
\(n_{Ca\left(OH\right)_2}=0,3.0,01=0,003\left(mol\right)\)
\(SO_2+Ca\left(OH\right)_2\rightarrow CaSO_3+H_2O\)
0,0025 --------------> 0,0025
Xét \(\dfrac{0,0025}{1}< \dfrac{0,003}{1}\) => \(Ca\left(OH\right)_2\) dư
\(m_{kt}=m_{CaSO_3}=0,0025.120=0,3\left(g\right)\)
\(n_{SO_2}=\dfrac{0,056}{22,4}=0,0025\left(mol\right)\\ n_{Ca\left(OH\right)_2}=0,3.0,01=0,003\left(mol\right)\\ SO_2+Ca\left(OH\right)_2\xrightarrow[]{}CaSO_3+H_2O\\ \Rightarrow\dfrac{0,0025}{1}< \dfrac{0,003}{1}\Rightarrow Ca\left(OH\right)_2.dư\\ n_{CaSO_3}=n_{Ca\left(OH\right)_2}=n_{SO_2}=0,0025mol\\ m_{CaSO_3}=0,0025.120=0,3\left(g\right)\)