Đáp án + Giải thích các bước giải:

 a) $(1)MnO_2 + 4HCl \longrightarrow MnCl_2 + Cl_2 \uparrow + 2H_2O$

$(2) Cl_2 + NaOH \longrightarrow NaCl + NaClO + H_2O$

$(3) 2NaCl + H_2SO_{4 đ} \overset{t^o > 400^oC}{\longrightarrow} 2HCl + Na_2SO_4$
$(4) Fe + 2HCl \longrightarrow FeCl_2 + H_2$
$(5) 2FeCl_2 + Cl_2 \longrightarrow 2FeCl_3$

$(6) FeCl_3 + 3AgNO_3 \longrightarrow Fe(NO_3)_3 + 3AgCl \downarrow$

$(7) 2AgCl \overset{\text{ánh sáng}}{\longrightarrow} 2Ag + Cl_2$
$(8) Cl_2 + H_2O \rightleftharpoons HCl + HClO$

b) $(1) 2KMnO_4 + 16HCl \longrightarrow 2KCl + 2MnCl_2 + 5Cl_2 + 8H_2O$

$(2) Cl_2 + H_2O \rightleftharpoons HCl + HClO$

$(3) Fe_2O_3 + 6HCl \longrightarrow 2FeCl_3 + 3H_2O$

$(4) FeCl_3 + 3NaOH \longrightarrow Fe(OH)_3 \downarrow + 3NaCl$

$(5) 2H_2O + 2NaCl \xrightarrow[\text{có màng ngăn}]{đp} 2NaOH + H_2 \uparrow + Cl_2 \uparrow$

$(6) 3Cl_2 + 6KOH \overset{t^o}{\longrightarrow} 5KCl + KClO_3 + 3H_2O$

$(7) 2KClO_3 \overset{t^o}{\longrightarrow} 2KCl + 3O_2 \uparrow$
$(8) KCl + H_2SO_4 \overset{500^oC}{\longrightarrow} K_2SO_4 + HCl$

$(9) HCl + AgNO_3 \longrightarrow AgCl \downarrow + HNO_3$
c) $(1) CaCO_3 \overset{t^o}{\longrightarrow} CaO + CO_2$

$(2) CaO + 2HCl \longrightarrow CaCl_2 + H_2O + CO_2$
$(3) CaCl_2 + 2AgNO_3 \longrightarrow Ca(NO_3)_2 + 2AgCl \downarrow$

$(4) 2AgCl \overset{\text{ánh sáng}}{\longrightarrow} 2Ag + Cl_2$

$(5) Cl_2 + H_2O \rightleftharpoons HCl + HClO$

$(6) HCl + NaOH \longrightarrow NaCl + H_2O$

$(7) 2NaCl + H_2SO_{4 đ} \overset{t^o > 400^oC}{\longrightarrow} 2HCl + Na_2SO_4$

$(8) Fe + 2HCl \longrightarrow FeCl_2$

$(9) 2FeCl_2 + Cl_2 \longrightarrow 2FeCl_3$

$(10) FeCl_3 + 3NaOH \longrightarrow Fe(OH)_3 \downarrow + 3NaCl$

d) $(1) 2H_2O + 2NaCl \xrightarrow[\text{có màng ngăn}]{đp} 2NaOH + H_2 \uparrow + Cl_2 \uparrow$

$(2) H_2 + Cl_2 \xrightarrow[\text{có ánh sáng}]{t^o} 2HCl$

$(3) CuO + 2HCl \longrightarrow CuCl_2 + H_2O$

$(4) CuCl_2 + 2AgNO_3 \longrightarrow Cu(NO_3)_2 + 2AgCl \downarrow$
$(5) 2AgCl \overset{\text{ánh sáng}}{\longrightarrow} 2Ag + Cl_2$

$(6) H_2S + 4H_2O + 4Cl_2 \longrightarrow H_2SO_4 + 8HCl$

$(7) KCl + H_2SO_4 \overset{500^oC}{\longrightarrow} K_2SO_4 + HCl$

Đáp án:

`↓`

Giải thích các bước giải:

Bài 4:

`a)`

`-` `MnO_2``+``4HCl``→``MnCl_2``+``Cl_2↑``+``2H_2O`

`-` `2Na``+``Cl_2` $\xrightarrow[]{t^o}$ `2NaCl`

`-` `2NaCl``+`$H_2SO_{4(đ)}$ $\xrightarrow[]{t^o}$ `Na_2SO_4``+``2HCl`

`-` `Fe``+``2HCl``→``FeCl_2``+``H_2↑`

`-` `2FeCl_2``+``Cl_2` $\xrightarrow[]{t^o}$ `2FeCl_3`

`-` `FeCl_3``+``3AgNO_3``→``Fe(NO_3)_3``+``3AgCl↓`

`-` `2AgCl` $\xrightarrow[]{as}$ `2Ag``+``Cl_2↑`

`-` `Cl_2``+``2NaOH``→``NaClO``+``NaCl``+``H_2O`

`b)`

`-` `2KMnO_4``+``16HCl``→``2KCl``+``2MnCl_2``+``5Cl_2``+``8H_2O`

`-` `H_2``+``Cl_2` $\xrightarrow[]{as}$ `2HCl`

`-` `Fe(OH)_3``+``3HCl``→``FeCl_3``+``3H_2O`

`-` `FeCl_3``+``3NaOH``→``Fe(OH)_3↓``+``3NaCl`

`-` `2NaCl` $\xrightarrow[]{đpnc}$ `2Na``+``Cl_2↑`

`-` `3Cl_2``+`$6KOH_{đặc, nóng}$ $\xrightarrow[]{t^o}$ `KClO_3``+``5KCl``+``3H_2O`

`-` `2KClO_3` $\xrightarrow[]{t^o}$ `2KCl``+``3O_2↑`

`-` `2KCl``+`$H_2SO_{4(đặc, nóng)}$ $\xrightarrow[]{t^o}$ `K_2SO_4``+``2HCl`

`-` `HCl``+``AgNO_3``→``AgCl↓``+``HNO_3`

`c)`

`-` `CaCO_3` $\xrightarrow[]{t^o}$ `CaO``+``CO_2↑`

`-` `CaO``+``2HCl``→``CaCl_2``+``H_2O`

`-` `CaCl_2``+``2AgNO_3``→``Ca(NO_3)_2``+``2AgCl↓`

`-` `2AgCl` $\xrightarrow[]{as}$ `2Ag``+``Cl_2↑`

`-` `H_2``+``Cl_2` $\xrightarrow[]{as}$ `2HCl`

`-` `HCl``+``NaOH``→``NaCl``+``H_2O`

`-` `2NaCl``+`$H_2SO_{4(đ)}$ $\xrightarrow[]{t^o}$ `Na_2SO_4``+``2HCl`

`-` `Fe``+``2HCl``→``FeCl_2``+``H_2↑`

`-` `2FeCl_2``+``Cl_2` $\xrightarrow[]{t^o}$ `2FeCl_3`

`-` `FeCl_3``+``3NaOH``→``Fe(OH)_3↓``+``3NaCl`

`d)`

`-` `2NaCl``+``2H_2O` $\xrightarrow[cmn]{đpdd}$ `2NaOH``+``Cl_2↑``+``H_2↑`

`-` `H_2``+``Cl_2` $\xrightarrow[]{t^o}$ `2HCl`

`-` `CuO``+``2HCl``→``CuCl_2``+``H_2O`

`-` `CuCl_2``+``2AgNO_3``→``Cu(NO_3)_2``+``2AgCl↓`

`-` `2AgCl` $\xrightarrow[]{as}$ `2Ag``+``Cl_2↑`

`-` `Cl_2``+``2H_2O``+``SO_2``→``H_2SO_4``+``2HCl`

`-` `BaCl_2``+``H_2SO_4``→``BaSO_4↓``+``2HCl`