a) ………. + HCl →MgCl2 + H2 b) ……… + AgNO3 →Cu(NO3)2 + Ag c) ……… + ………… →ZnO d) …….. + Cl2 →CuCl2 e) ……. + S —> K2
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Answers ( )
`a,Mg+2HCl->MgCl_2+H_2`
`b,Cu+2AgNO_3->2Ag+Cu(NO_3)_2`
$c,2Zn+O_2\xrightarrow{t^o}2ZnO$
$d,Cu+Cl_2\xrightarrow{t^o}CuCl_2$
$e,2K+S\xrightarrow{t^o}K_2S$
Đáp án:
Giải thích các bước giải:
a) `Mg + 2HCl →MgCl_2 + H_2\uparrow`
b) `Cu + 2AgNO_3 →Cu(NO_3)_2 + Ag`
c) `2Zn + O_2 →2ZnO`
d) `Cu + Cl2 →CuCl_2`
e) `2K + S→ K_2S.`