Số mol khí CO2 là: 2,24/22,4=0,1 mol

Pthh: CO2 + Ca(OH)2--> CaCO3 + H2O

--> Số mol Ca(OH)2 là 0,1 mol

Nồng độ mol/l của Ca(OH)2:

0,1/0,1=1M

--> D

\(n_{CO_2}=\dfrac{4,48}{22,4}=0,2\left(mol\right)\\ PTHH:CO_2+Ca\left(OH\right)_2\rightarrow CaCO_3\downarrow+H_2O\\ \Rightarrow n_{Ca\left(OH\right)_2}=n_{CO_2}=0,2\left(mol\right)\\ \Rightarrow C_{M_{Ca\left(OH\right)_2}}=\dfrac{0,2}{0,5}=0,4M\)

\(n_{SO_2}=\dfrac{5.6}{22.4}=0.25\left(mol\right)\)

TH1 : Tạo ra muối trung hòa

\(Ca\left(OH\right)_2+SO_2\rightarrow CaSO_3+H_2O\)

\(0.25...........0.25\)

\(C_{M_{Ca\left(OH\right)_2}}=\dfrac{0.25}{0.1}=2.5\left(M\right)\)

TH2 : Tạo ra muối axit

\(Ca\left(OH\right)_2+2SO_2\rightarrow Ca\left(HSO_3\right)_2\)

\(0.125............0.25\)

\(C_{M_{Ca\left(OH\right)_2}}=\dfrac{0.125}{0.1}=1.25\left(M\right)\)

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

\(m_{ddHCl}=\dfrac{0,5.36,5.100}{20}=91,25\left(g\right)\)

\(a.n_{CO_2}=\dfrac{5,6}{22,4}=0,25\left(mol\right)\\ a.Ca\left(OH\right)_2+CO_2\rightarrow CaCO_3+H_2O\\ 0,25.......0,25............0,25..........0,25\left(mol\right)\\ C_{MddCa\left(OH\right)_2}=\dfrac{0,25}{0,1}=2,5\left(M\right)\\ b.m_{\downarrow}=m_{CaCO_3}=100.0,25=25\left(g\right)\)

a, \(CO_2+Ca\left(OH\right)_2\rightarrow CaCO_3+H_2O\)

b, \(n_{CO_2}=\dfrac{5,6}{22,4}=0,25\left(mol\right)\)

\(n_{Ca\left(OH\right)_2}=n_{CO_2}=0,25\left(mol\right)\Rightarrow C_{M_{Ca\left(OH\right)_2}}=\dfrac{0,25}{0,2}=1,25\left(M\right)\)

c, \(Ca\left(OH\right)_2+2HCl\rightarrow CaCl_2+2H_2O\)

Theo PT: \(n_{HCl}=2n_{Ca\left(OH\right)_2}=0,5\left(mol\right)\)

\(\Rightarrow m_{ddHCl}=\dfrac{0,5.36,5}{15\%}\approx121,67\left(g\right)\)

\(n_{CO_2}=\dfrac{5,6}{22,4}=0,25mol\\ a)CO_2+Ca\left(OH\right)_2\rightarrow Ca\left(OH\right)_2+H_2O\)

    0,25       0,25                0,25

\(b)C_{M_{Ca\left(OH\right)_2}}=\dfrac{0,25}{0,2}=1,25M\\ c)2HCl+Ca\left(OH\right)_2\rightarrow CaCl_2+2H_2O\\ n_{HCl}=2n_{Ca\left(OH\right)_2}=2.0,25=0,5mol\\ m_{ddHCl}=\dfrac{0,5.36,5}{15\%}\cdot100\%\approx121,67g\)

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: \(n_{CaCO_3}=n_{CO_2}=0,1\left(mol\right)\)

\(\Rightarrow m_{CaCO_3}=n_{CaCO_3}.M_{CaCO_3}=0,1.74=7,4\left(g\right)\)

* Ta có: \(n_{CO_2}=\dfrac{5,6}{22,4}=0,25\left(mol\right)\)

a. PTHH: \(CO_2+Ca\left(OH\right)_2--->CaCO_3\downarrow+H_2O\)

b. Theo PT: \(n_{Ca\left(OH\right)_2}=n_{CO_2}=0,25\left(mol\right)\)

Đổi 100ml = 0,1 lít

=> \(C_{M_{Ca\left(OH\right)_2}}=\dfrac{0,25}{0,1}=2,5M\)

* PTHH: X₂O₃ + 3H₂SO₄ ---> X₂(SO₄)₃ + 3H₂O

Đổi 600ml = 0,6 lít

Ta có: \(n_{H_2SO_4}=1.0,6=0,6\left(mol\right)\)

Theo PT: \(n_{X_2O_3}=\dfrac{1}{3}.n_{H_2SO_4}=\dfrac{1}{3}.0,6=0,2\left(mol\right)\)

=> \(M_{X_2O_3}=\dfrac{32}{0,2}=160\left(g\right)\)

Ta có: \(M_{X_2O_3}=NTK_X.2+16.3=160\left(g\right)\)

=> NTK_X = 56(đvC)

Vậy X là sắt (Fe)

=> CTHH là Fe₂O₃

a) $CO_2 + Ca(OH)_2 \to CaCO_3 + H_2O$

b) $n_{Ca(OH)_2} = n_{CO_2} = \dfrac{5,6}{22,4} = 0,25(mol)$

$\Rightarrow C_{M_{Ca(OH)_2}} = \dfrac{0,25}{0,1} = 2,5M$

c) $n_{CaCO_3} = n_{CO_2} = 0,25(mol)$

$\Rightarrow m_{CaCO_3} = 0,25.100 = 25(gam)$

a/ Ca(OH)2 + CO2--> CaCO3 + H2O

nCO2=3.36/22.4=0.15(mol)

nCO2=nCa(OH)2=0.15(mol)

200ml=0.2l

b/CMCa(OH)2= 0.15/0.2=0.75(M)

c/nCaCO3=nCO2=0.15(mol)

mCaCO3= 0.15 x 106=15.9(g)