Đáp án:

Câu 1:

a, $NaCl+AgNO_3\to AgCl+NaNO_3$ 

b, Không phản ứng 

c, $Fe+CuCl_2\to FeCl_2+Cu$ 

d, $BaCl_2+H_2SO_4\to BaSO_4+2HCl$ 

e, Không phản ứng 

f, $BaCO_3+2HCl\to BaCl_2+CO_2+H_2O$ 

g, $Na_2SO_3+H_2SO_4\to Na_2SO_4+SO_2+H_2O$ 

Câu 2:

a,

$Na_2CO_3+2HCl\to 2NaCl+CO_2+H_2O$ 

b,

$n_{CO_2}=\dfrac{V_{CO_2}}{24,79}=\dfrac{4,958}{24,79}=0,2$ mol 

Theo PTHH:

$n_{Na_2CO_3}=n_{CO_2}=0,2$ mol 

$\Rightarrow m=m_{Na_2CO_3}=n_{Na_2CO_3}.M_{Na_2CO_3}=0,2.106=21,2g$ 

c,

Theo PTHH:

$n_{HCl}=2n_{CO_2}=2.0,2=0,4$ mol 

$\Rightarrow m_{HCl}=n_{HCl}.M_{HCl}=0,4.36,5=14,6g$ 

$\Rightarrow a=m_{dd HCl}=m_{HCl}:C\%=14,6:3,65\%=400g$ 

Câu 3:

$\begin{array}{|c|c|c|}\hline \text{Muối}&\text{Tên gọi}&\text{Tính tan}\\\hline \text{$Na_2CO_3$}&\text{sodium carbonate}&\text{tan tốt trong nước}\\\hline \text{$K_3PO_4$}&\text{potassium phosphate}&\text{tan tốt trong nước}\\\hline \text{$(NH_4)_2CO_3$}&\text{ammonium carbonate}&\text{tan tốt trong nước}\\\hline \text{$AlCl_3$}&\text{aluminium chloride}&\text{tan tốt trong nước}\\\hline \text{$FeS$}&\text{ferrous sulfide}&\text{không tan trong nước}\\\hline\end{array}$

`1)`

`a)\ NaCl+AgNO_3->NaNO_3+AgCl`

`b)` Không xảy ra

`c)\ Fe+CuCl_2->FeCl_2+Cu`

`d)\ BaCl_2+H_2SO_4->BaSO_4+2HCl`

`e)` Không xảy ra

`f)\ BaCO_3+2HCl->BaCl_2+CO_2+H_2O`

`g)\ Na_2SO_3+H_2SO_4->Na_2SO_4+SO_2+H_2O`

`2)`

`a)`

`Na_2CO_3+2HCl->2NaCl+CO_2+H_2O`

`b)`

`n_{CO_2}={4,958}/{24,79}=0,2\ (mol)`

Theo PT: `n_{Na_2CO_3}=n_{CO_2}=0,2\ (mol)`

`->m=0,2.106=21,2\ (g)`

`c)`

Theo PT: `n_{HCl}=2n_{CO_2}=0,4\ (mol)`

`->m_{HCl}=0,4.36,5=14,6\ (g)`

`->a={14,6}/{3,65%}=400\ (g)`

`3)`

\begin{array}{|c|c|c|}\hline \text{Muối}&\text{Tên gọi}&\text{Tính tan}\\\hline \text{}\rm Na_2CO_3&\text{Sodium carbonate}&\text{Tan trong nước}\\\hline \text{}\rm K_3PO_4&\text{Potassium phosphate}&\text{Tan trong nước}\\\hline \text{}\rm (NH_4)_2CO_3&\text{Ammonium carbonate}&\text{Tan trong nước}\\\hline \text{}\rm AlCl_3&\text{Aluminium chloride}&\text{Tan trong nước}\\\hline \text{}\rm FeS&\text{Iron sulfide}&\text{Không tan trong nước}\\\hline \end{array}