Em tham khảo nha:

\(\begin{array}{l}
11)\\
a)\\
C + {O_2} \xrightarrow{t^0} C{O_2}\\
C{O_2} + Ca{(OH)_2} \to CaC{O_3} + {H_2}O\\
CaC{O_3} \xrightarrow{t^0} CaO + C{O_2}\\
CaO + {H_2}O \to Ca{(OH)_2}\\
Ca{(OH)_2} + 2C{O_2} \to Ca{(HC{O_3})_2}\\
Ca{(OH)_2} + C{O_2} \to CaC{O_3} + {H_2}O\\
b)\\
4Na + {O_2} \xrightarrow{t^0} 2N{a_2}O\\
N{a_2}O + {H_2}O \to 2NaOH\\
2NaOH + C{O_2} \to N{a_2}C{O_3} + {H_2}O\\
NaOH + C{O_2} \to NaHC{O_3}\\
c)\\
C{O_2} + 2{H_2} \xrightarrow{t^0} C + 2{H_2}O\\
2C + {O_2} \xrightarrow{t^0} 2CO\\
2CO + {O_2} \xrightarrow{t^0} 2C{O_2}\\
C{O_2} + Ca{(OH)_2} \to CaC{O_3} + {H_2}O\\
CaC{O_3} + C{O_2} + {H_2}O \to Ca{(HC{O_3})_2}\\
Ca{(HC{O_3})_2} + 2HCl \to CaC{l_2} + 2C{O_2} + 2{H_2}O\\
d)\\
C{O_2} + Ca{(OH)_2} \to CaC{O_3} + {H_2}O\\
CaC{O_3} + C{O_2} + {H_2}O \to Ca{(HC{O_3})_2}\\
Ca{(HC{O_3})_2} + 2HCl \to CaC{l_2} + 2C{O_2} + 2{H_2}O\\
C{O_2} + C \xrightarrow{t^0} 2CO\\
12)\\
a)\\
C{O_2} + Ca{(OH)_2} \to CaC{O_3} + {H_2}O\\
\text{ CO không tác dụng với $Ca(OH)_2$ nên khí thoát ra là CO }\\
\% {V_{CO}} = \dfrac{{2,8}}{{5,6}} \times 100\%  = 50\% \\
\% {V_{C{O_2}}} = 100 - 50 = 50\% \\
b)\\
{n_{C{O_2}}} = \dfrac{{2,8}}{{22,4}} = 0,125\,mol\\
{n_{Ca{{(OH)}_2}}} = {n_{C{O_2}}} = 0,125\,mol\\
{C_M}Ca{(OH)_2} = \dfrac{{0,125}}{{0,1}} = 1,25M
\end{array}\)

 

Câu 11:

a.(1) $C$ + $O_2$ $\xrightarrow{t^o}$ $CO_2$

   (2) $CO_2$ + $Ca(OH)_2$ $\rightarrow$ $CaCO_3$ + $H_2O$

   (3) $CaCO_3$ $\xrightarrow{t^o}$ $CaO$ + $CO_2$

   (4) $CaO$ + $H_2O$ $\rightarrow$ $Ca(OH)_2$

   (5) $Ca(OH)_2$ + $CO_2$ $\rightarrow$ $CaCO_3$ + $H_2O$

   (6) $Ca(OH)_2$ + $2H_2O$ $\rightarrow$ $Ca(HCO_3)_2$

b.(1) $4Na$ + $O_2$ $\xrightarrow{t^o}$ $2Na_2O$

   (2) $Na_2O$ + $H_2O$ $\rightarrow$ $2NaOH$

   (3) $2NaOH$ + $CO_2$ $\rightarrow$ $Na_2CO_3$ + $H_2O$

   (4) $NaOH$ + $CO_2$ $\rightarrow$ $NaHCO_3$

c.(1) $CO_2$ + $C$ $\xrightarrow{t^o}$ $2CO$

   (2) $C$ + $O_2$ $\xrightarrow{t^o}$ $CO_2$

   (3) $CO_2$ + $Ca(OH)_2$ $\rightarrow$ $CaCO_3$ + $H_2O$

   (4) $CaCO_3$ + $H_2O$ + $CO_2$ $\rightleftharpoons$ $Ca(HCO_3)_2$

   (5) $Ca(HCO_3)_2$ $\rightleftharpoons$ $CO_2$ + $CaCO_3$ + $H_2O$

d.(1) $CO_2$ + $Ca(OH)_2$ $\rightarrow$ $CaCO_3$ + $H_2O$

   (2) $CaCO_3$ + $H_2O$ + $CO_2$ $\rightleftharpoons$ $Ca(HCO_3)_2$

   (3) $Ca(HCO_3)_2$ $\rightleftharpoons$ $CO_2$ + $CaCO_3$ + $H_2O$

   (4) $CO_2$ + $C$ $\xrightarrow{t^o}$ $2CO$

Câu 12:

a.Pt: $CO_2$ + $Ca(OH)_2$ $\rightarrow$ $CaCO_3$ + $H_2O$(1)

Khí thoát ra là $CO$

%$V_{CO}$= $\frac{2,8×100}{5,6}$ = 50%

%$V_{CO_2}$= 100%- 50%= 50%

b. $n_{CO_2}$= $\frac{5,6- 2,8}{22,4}$= 0,125(mol)

  Từ pt(1)$\Rightarrow$ $n_{Ca(OH)_2}$= 0,125(mol)

$C_{MCa(OH)_2}$ = $\frac{0,125}{0,1}$=1,25(M)