2 câu trả lời
$\text{PTHH:}$
$\text{2KMnO$_{4}$+16HCl→2KCl+2MnCl$_{2}$+5Cl$_{2}$+8H$_{2}$O}$
$\text{Ca(OH)2+Cl$_{2}$→CaOCl$_{2}$+H$_{2}$O}$
$\text{CaOCl$_{2}$+2HCl→CaCl$_{2}$+Cl$_{2}$+H$_{2}$O}$
$\text{2NaCl+H$_{2}$O$\xrightarrow[có màng ngăn]{đpdd}$2NaOH+Cl$_{2}$+H$_{2}$}$
$\text{NaOH+HCl→NaCl+H$_{2}$O}$
Giải thích các bước giải:
1/. $2KMnO_4+16HCl→2KCl+2MnCl_2+5Cl_2↑+8H_2O$
2/. $Cl_2+Ca(OH)_2$ $\xrightarrow{t^o}$ $CaOCl_2+H_2O$
3/. $CaOCl_2+2HCl→Cl_2↑+CaCl_2+H_2O$
4/. $Cl_2+2Na$ $\xrightarrow{t^o}$ $2NaCl$
5/. $2NaCl+2H_2O$ $\xrightarrow{đpdd,cómàngngăn}$ $2NaOH+H_2↑+Cl_2↑$
6/. $NaOH+HCl→NaCl+H_2O$
