Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(a.n_{CO_2}=\dfrac{5,6}{22,4}=0,25\left(mol\right)\\ a.Ca\left(OH\right)_2+CO_2\rightarrow CaCO_3+H_2O\\ 0,25.......0,25............0,25..........0,25\left(mol\right)\\ C_{MddCa\left(OH\right)_2}=\dfrac{0,25}{0,1}=2,5\left(M\right)\\ b.m_{\downarrow}=m_{CaCO_3}=100.0,25=25\left(g\right)\)
\(n_{CO_2}=\dfrac{5,6}{22,4}=0,25\left(mol\right)\)
PT: \(CO_2+Ca\left(OH\right)_2\rightarrow CaCO_3+H_2O\)
Theo PT: \(n_{Ca\left(OH\right)_2}=n_{CaCO_3}=n_{CO_2}=0,25\left(mol\right)\)
a, \(C_{M_{Ca\left(OH\right)_2}}=\dfrac{0,25}{0,1}=2,5\left(M\right)\)
b, \(m_{CaCO_3}=0,25.100=25\left(g\right)\)
c, \(Ca\left(OH\right)_2+2HCl\rightarrow CaCl_2+2H_2O\)
Theo PT: \(n_{HCl}=2n_{Ca\left(OH\right)_2}=0,5\left(mol\right)\)
\(\Rightarrow m_{ddHCl}=\dfrac{0,5.36,5}{20\%}=91,25\left(g\right)\)
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) \(n_{CO_2}=\dfrac{2,24}{22,4}=0,1\left(mol\right)\)
\(CO_2+Ca\left(OH\right)_2\rightarrow CaCO_3+H_2O\)
Theo PTHH: \(n_{Ca\left(OH\right)_2}=n_{CO_2}=0,1\left(mol\right)\)
\(V_{Ca\left(OH\right)_2}=200ml=0,2l\)
\(\Rightarrow C_{MCa\left(OH\right)_2}=\dfrac{n_{Ca\left(OH\right)_2}}{V_{Ca\left(OH\right)_2}}=\dfrac{0,1}{0,2}=0,5M\)
b) Theo PTHH có: \(n_{CaCO_3}=n_{CO_2}=0,1\left(mol\right)\)
\(\Rightarrow m_{CaCO_3}=n_{CaCO_3}.M_{CaCO_3}=0,1.74=7,4\left(g\right)\)
a/ PTHH: CO2 + Ca(OH)2 ===> CaCO3+ H2O
nCO2 = 2,24 / 22,4 = 0,1 mol
=> nCa(OH)2 = nCaCO3 = nCO2 = 0,1 mol
=> CM(CaOH)2 = 0,1 / 0,2 = 0,5M
b/ => mCaCO3 = 0,1 x 100 = 10 gam
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