\(n_{CO2}=\frac{3,136}{22,4}=0,14\left(mol\right)\)

\(n_{Ca\left(OH\right)2}=0,1.0,8=0,08\left(mol\right)\)

\(T=\frac{0,14}{0,08}=1,75\)

Vì 1 < T < 2 nên sản phẩm thu được gồm :CaCO3 , Ca(HCO3)2

PTHH

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

x_________________x_____________

\(2CO_2+Ca\left(OH\right)_2\rightarrow Ca\left(HCO_3\right)_2\)

2y______________________y

Gọi nCaCO3 = x và nCa(HCO3)2 = y

Theo PT ta có :
\(\left\{{}\begin{matrix}x+2y=0,14\\x+y=0,08\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}x=0,02\\y=0,06\end{matrix}\right.\)

\(\Rightarrow m_{CaCO3}=0,02.100=2\left(g\right)\)

\(CM_{Ca\left(HCO3\right)2}=\frac{0,06}{0,8}=0,075M\)

a) 2Fe + 3Cl₂ --> 2FeCl₃ 

b) \(n_{Fe}=\dfrac{5,6}{56}=0.1\left(mol\right)\)

2Fe + 3Cl₂ --> 2FeCl₃ 

_{0,1------------------->0,1}

=> m_FeCl3 = 0,1.162,5=16,25(g)

c) \(C_M=\dfrac{0,1}{0,1}=1M\)

PTHH: \(2KOH+H_2SO_4\rightarrow K_2SO_4+2H_2O\)

Ta có: \(n_{KOH}=0,2\cdot0,5=0,1\left(mol\right)\)

\(\Rightarrow n_{H_2SO_4}=n_{K_2SO_4}=0,05\left(mol\right)\) \(\Rightarrow\left\{{}\begin{matrix}C_{M_{H_2SO_4}}=\dfrac{0,05}{0,1}=0,5\left(M\right)\\C_{M_{K_2SO_4}}=\dfrac{0,05}{0,2+0,1}\approx0,17\left(M\right)\end{matrix}\right.\)

Bài 1 : 

200ml = 0,2l

100ml = 0,1l

\(n_{KOH}=0,5.0,2=0,1\left(mol\right)\)

a) Pt : \(2KOH+H_2SO_4\rightarrow K_2SO_4+2H_2O|\)

                2             1                1             2

              0,1          0,05            0,05

b) \(n_{H2SO4}=\dfrac{0,1.1}{2}=0,05\left(mol\right)\)

\(C_{M_{ddH2SO4}}=\dfrac{0,05}{0,1}=0,5\left(M\right)\)

c) \(n_{K2SO4}=\dfrac{0,05.1}{1}=0,05\left(mol\right)\)

\(V_{ddspu}=0,2+0,1=0,3\left(l\right)\)

\(C_{M_{K2SO4}}=\dfrac{0,05}{0,3}=\dfrac{1}{6}\left(M\right)\)

 Chúc bạn học tốt

Bài 1 : 

$n_{CO_2} = \dfrac{3,136}{22,4} = 0,14(mol)$
$n_{Ca(OH)_2} = 0,8.0,1 = 0,08(mol)$

CO₂ + Ca(OH)₂ → CaCO₃ + H₂O

0,08.......0,08...........0,08........................(mol)

CaCO₃ + CO₂ + H₂O → Ca(HCO₃)₂

0,06........0,06........................................(mol)

Suy ra : $m_{CaCO_3} = (0,08 - 0,06).100 = 2(gam)$

Bài 2 : 

$n_{CO_2} = \dfrac{2,24}{22,4} = 0,1(mol) ; n_{NaOH} = 0,1.1,5 = 0,15(mol)$
2NaOH + CO₂ → Na₂CO₃ + H₂O

0,15........0,075.......0,075....................(mol)

Na₂CO₃ + CO₂ + H₂O → 2NaHCO₃

0,025........0,025...................0,05..............(mol)

Suy ra:  

$C_{M_{NaHCO_3}} = \dfrac{0,05}{0,1} = 0,5M$
$C_{M_{Na_2CO_3}} = \dfrac{0,075 - 0,025}{0,1} = 0,5M$

b)

$NaOH + HCl \to NaCl + H_2O$
$n_{HCl} = n_{NaOH} = 0,15(mol)$
$m_{dd\ HCl} = \dfrac{0,15.36,5}{25\%} = 21,9(gam)$

\(a/ CO_2+2NaOH \to Na_2CO_3+H_2O\\ n_{CO_2}=0,1(mol)\\ b/\\ n_{NaOH}=0,1.2=0,2(mol)\\ CM_{NaOH}=\frac{0,2}{0,2}=1M\\ c/\\ n_{Na_2CO_3}=n_{CO_2}=0,1(mol)\\ m_{Na_2CO_3}=0,1.106==10,6(g)$\)

\(n_{CO2}=\dfrac{2,24}{22,4}=0,1\left(mol\right)\)

a) Pt : \(CO_2+2NaOH\rightarrow Na_2CO_3+H_2O|\)

             1              2                 1             1

            0,1          0,2              0,1

b) \(n_{NaOH}=\dfrac{0,1.2}{1}=0,2\left(mol\right)\)

200ml = 0,2l

\(C_{M_{ddNaOH}}=\dfrac{0,2}{0,2}=1\left(M\right)\)

c) \(n_{Na2CO3}=\dfrac{0,2.1}{2}=0,1\left(mol\right)\)

⇒ \(m_{Na2CO3}=0,1.106=10,6\left(g\right)\)

 Chúc bạn học tốt

a) 2Al + 3Cl₂ --t^o--> 2AlCl₃

b) \(n_{Al}=\dfrac{2,7}{27}=0,1\left(mol\right)\)

2Al + 3Cl₂ --t^o--> 2AlCl₃

0,1----------------->0,1

=> m_AlCl3 = 0,1.133,5 = 13,35 (g)

=> \(C_M=\dfrac{0,1}{0,1}=1M\)

a, PTHH: 2Al + 3Cl₂ \(\underrightarrow{t^o}\) 2AlCl₃

b, \(n_{Al}=\dfrac{2,7}{27}=0,1mol\)

2Al + 3Cl₂ \(\underrightarrow{t^o}\) 2AlCl₃

0,1    0,15          0,1 ( mol )

\(m_{AlCl_3}=0,1.133,5=13,35g\)

\(n_{KMnO_4}=\frac{15,8}{158}=0,1\left(mol\right)\)

PTHH : \(2KMnO_4+16HCl-->2KCl+2MnCl_2+5Cl_2+8H_2O\)   (1)

              \(Cl_2+H_2-as->2HCl\)   (2) 

Có : \(m_{ddHCl}=100\cdot1,05=105\left(g\right)\)              

=> \(m_{HCl}=105-97,7=7,3\left(g\right)\)

=> \(n_{HCl}=\frac{7,3}{36,5}=0,2\left(mol\right)\)

BT Clo : \(n_{Cl_2}=\frac{1}{2}n_{HCl}=0,1\left(mol\right)\)

Mà theo lí thuyết : \(n_{Cl_2}=\frac{5}{2}n_{KMnO_4}=0,25\left(mol\right)\)

=> \(H\%=\frac{0,1}{0,25}\cdot100\%=40\%\)

Vì spu nổ thu được hh hai chất khí => \(\hept{\begin{cases}H_2\\HCl\end{cases}}\) (Vì H₂ dư)

=> \(n_{hh}=\frac{13,44}{22,4}=0,6\left(mol\right)\)

=> \(n_{H_2\left(spu\right)}=n_{hh}-n_{HCl\left(spu\right)}=0,6-0,2=0,4\left(mol\right)\)

BT Hidro : \(\Sigma_{n_{H2\left(trong.binh\right)}}=n_{H_2\left(spu\right)}+\frac{1}{2}n_{HCl}=0,4+0,1=0,5\left(mol\right)\)

đọc thiếu đề câu a wtf

\(C_{M\left(HCl\right)}=\frac{0,2}{0,1}=2\left(M\right)\)

a, \(CuCl_2+2NaOH\rightarrow2NaCl+Cu\left(OH\right)_2\)

b, \(n_{NaOH}=\dfrac{10}{40}=0,25\left(mol\right)\)

Theo PT: \(n_{CuCl_2}=n_{Cu\left(OH\right)_2}=\dfrac{1}{2}n_{NaOH}=0,125\left(mol\right)\)

\(\Rightarrow m_{Cu\left(OH\right)_2}=0,125.98=12,25\left(g\right)\)

c, \(C_{M_{CuCl_2}}=\dfrac{0,125}{0,1}=1,25\left(M\right)\)

\(n_{NaOH}=\dfrac{10}{40}=0,25\left(mol\right)\)

a) PTHH : \(CuCl_2+2NaOH\rightarrow2NaCl+Cu\left(OH\right)_2\)

                   0,125<-----0,25---------------------->0,125

b) \(m_{Kt}=m_{Cu\left(OH\right)2}=0,125.98=12,25\left(g\right)\)

c) \(C_{MCuCl2}=\dfrac{0,125}{0,1}=1,25\left(M\right)\)

\(n_{NaOH}=\dfrac{10}{40}=0,25\left(mol\right)\)

PTHH:

\(CuCl_2+2NaOH\rightarrow Cu\left(OH\right)_2+2NaCl\)

0,125       0,25                0,125         0,25

\(m_{Cu\left(OH\right)_2}=0,125.98=12,25\left(g\right)\)

\(C_{M\left(CuCl_2\right)}=\dfrac{0,125}{0,1}=1,25\left(M\right)\)