\[\eqalign{ & 2NaCl\,\,\text{[rắn]}\,\, + \,\,{H_2}S{O_4}\,\text{[đặc]}\,\xrightarrow{{{t^o}}}\,\,N{a_2}S{O_4}\,\, + \,\,2HCl \uparrow \cr & Mn{O_2}\,\, + \,\,\,4HCl\,\,\xrightarrow{{{t^o}}}\,\,MnC{l_2}\,\, + \,\,C{l_2} \uparrow \,\, + \,\,2{H_2}O \cr} \]
Đề bài
Từ các chất NaCl, MnO2, H2SO4 đặc.
Hãy viết phương trình phản ứng điều chế Cl2, hiđroclrua.
Lời giải chi tiết
*Cách 1
\[\eqalign{
& 2NaCl\,\,\text{[rắn]}\,\, + \,\,{H_2}S{O_4}\,\text{[đặc]}\,\xrightarrow{{{t^o}}}\,\,N{a_2}S{O_4}\,\, + \,\,2HCl \uparrow \cr
& Mn{O_2}\,\, + \,\,\,4HCl\,\,\xrightarrow{{{t^o}}}\,\,MnC{l_2}\,\, + \,\,C{l_2} \uparrow \,\, + \,\,2{H_2}O \cr} \]
*Cách 2
\[2NaCl\,\text{[rắn]}\,\, + \,\,2{H_2}S{O_4}\,\text{[đặc]}\,\, + \,\,Mn{O_2}\,\xrightarrow{{{t^o}}}\,\,N{a_2}S{O_4}\, + \,MnS{O_4}\, + \,C{l_2} \uparrow \, + \,2{H_2}O\]