a/

NaCl(rắn)+H2SO4(đặc)⇒NaHSO4+HCl

4HCl+MnO2⇒MnCl2+Cl2+2H2O                 
Cl2+H2O⇆HCl+HClO
H2S+HClO⇒HCl+H2SO4

HCl+AgNO3⇒HNO3+AgCl
2AgCl⇒2Ag+Cl2      (điện phân nóng chảy)
2HCl+Cu(OH)2⇒CuCl2+2H2O
2CuCl2 +SO2+2H2O⇒2CuCl+H2SO4+2HCl
b/

KCl(rắn)+H2SO4(đặc)⇒KHSO4+HCl

4HCl+MnO2⇒MnCl2+Cl2+2H2O

Cl2+2NaBr⇒2NaCl+Br2

Br2+2NaI⇒2NaBr+I2

3Br2+6FeCl2⇒2FeBr3+4FeCl3
FeCl3+3AgNO3⇒3AgCl+Fe(NO3)3
2AgCl⇒2Ag+Cl2      (điện phân nóng chảy)

Các phản ứng xảy ra:

a)

\(NaCl + {H_2}S{O_4}\xrightarrow{{}}NaHS{O_4} + HCl\)

\(Mn{O_2} + 4HCl\xrightarrow{{}}MnC{l_2} + C{l_2} + 2{H_2}O\)

\(C{l_2} + {H_2}O\overset {} \leftrightarrows HCl + HClO\)

\(2HClO\xrightarrow{{{t^o}}}2HCl + {O_2}\)

\(HCl + AgN{O_3}\xrightarrow{{}}AgCl + HN{O_3}\)

\(2AgCl\xrightarrow{{{t^o}}}2Ag + C{l_2}\)

\(CuO + 2HCl\xrightarrow{{}}CuC{l_2} + {H_2}O\)

Phản ứng cuối không xảy ra nha em

b)

\(CuO + 2HCl\xrightarrow{{}}CuC{l_2} + {H_2}O\)

\(KCl + {H_2}S{O_4}\xrightarrow{{}}KHS{O_4} + HCl\)

\(Mn{O_2} + 4HCl\xrightarrow{{}}MnC{l_2} + C{l_2} + 2{H_2}O\)

\(C{l_2} + 2NaBr\xrightarrow{{}}2NaCl + B{r_2}\)

\(B{r_2} + 2NaI\xrightarrow{{}}2NaBr + {I_2}\)

\(2Fe + 3C{l_2}\xrightarrow{{{t^o}}}2FeC{l_3}\)

\(FeC{l_3} + 3AgN{O_3}\xrightarrow{{}}Fe{(N{O_3})_3} + 3AgCl\)

\(2AgCl\xrightarrow{{{t^o}}}2Ag + C{l_2}\)