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\(a.n_{CO_2}=\dfrac{5,6}{22,4}=0,25\left(mol\right)\\ a.Ca\left(OH\right)_2+CO_2\rightarrow CaCO_3+H_2O\\ 0,25.......0,25............0,25..........0,25\left(mol\right)\\ C_{MddCa\left(OH\right)_2}=\dfrac{0,25}{0,1}=2,5\left(M\right)\\ b.m_{\downarrow}=m_{CaCO_3}=100.0,25=25\left(g\right)\)
a, \(n_{CO_2}=\dfrac{5,6}{22,4}=0,25\left(mol\right)\)
PTHH: CO2 + Ca(OH)2 → CaCO3 ↓ + H2O
Mol: 0,25 0,25 0,25
\(C_{M_{ddCa\left(OH\right)_2}}=\dfrac{0,25}{0,1}=2,5M\)
b, \(m_{CaCO_3}=0,25.100=25\left(g\right)\)
c,
PTHH: Ca(OH)2 + 2HCl → CaCl2 + 2H2O
Mol: 0,25 0,5
\(m_{ddHCl}=\dfrac{0,5.36,5.100}{20}=91,25\left(g\right)\)
PTHH: \(CO_2+Ca\left(OH\right)_2\rightarrow CaCO_3+H_2O\)
Đổi 1 bar = 0,98692 atm
a+b) \(n_{CO_2}=\dfrac{PV}{RT}=\dfrac{0,98692\cdot6,2}{0,082\cdot\left(25+273\right)}=0,25\left(mol\right)=n_{CaCO_3}=n_{Ca\left(OH\right)_2}\)
\(\Rightarrow\left\{{}\begin{matrix}C_{M_{Ca\left(OH\right)_2}}=\dfrac{0,25}{0,1}=2,5\left(M\right)\\m_{CaCO_3}=0,25\cdot100=25\left(g\right)\end{matrix}\right.\)
c) PTHH: \(Ca\left(OH\right)_2+2HCl\rightarrow CaCl_2+2H_2O\)
Theo PTHH: \(n_{HCl}=2n_{Ca\left(OH\right)_2}=0,5\left(mol\right)\) \(\Rightarrow m_{ddHCl}=\dfrac{0,5\cdot36,5}{20\%}=91,25\left(g\right)\)
\(a.n_{CO_2}=\dfrac{2,24}{22,4}=0,1\left(mol\right)\\ CO_2+Ba\left(OH\right)_2\rightarrow BaCO_3+H_2O\\ 0,1...........0,1.............0,1..........0,1\left(mol\right)\\ b.m_{kt}=m_{BaCO_3}=0,1.197=19,7\left(g\right)\\ c.C_{MddBa\left(OH\right)_2}=\dfrac{0,1}{0,2}=0,5\left(M\right)\)
a/ PTHH: CO2 + Ca(OH)2 ===> CaCO3 + H2O
b/ nCO2 = 2,24 / 22,4 = 0,1 mol
=> nCa(OH)2 = nCO2 = 0,1 mol
=>CM[Ca(OH)2] = 0,1 / 0,2 = 0,5M
c/ nCaCO3 = nCO2 = 0,1 mol
=> mCaCO3 = 0,1 x 100 = 10 gam
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`
ta có: nSO2= \(\dfrac{11,2}{22,4}\)= 0,5( mol)
PTPU
SO2+ Ca(OH)2\(\rightarrow\) CaSO3\(\downarrow\)+ H2O
0,5.......0,5................0,5................. mol
\(\Rightarrow\) CM Ca(OH)2= \(\dfrac{0,5}{0,1}\)= 5M
mCaSO3= 0,5. 120= 60( g)
Ca(OH)2+ 2HCl\(\rightarrow\) CaCl2+ 2H2O
0,5..............1................................ mol
\(\Rightarrow\) mHCl= 36,5. 1= 36,5( g)
\(\Rightarrow\) mdd HCl= \(\dfrac{36,5}{25\%}\)= 146( g)
thanks ạ