ca zn al2o3 k20 naoh cu(oh)2 caco3 agno3 kno3 cucl2 a) Chất nào td vs h20 .b) …………………… Hcl .c) …………………….koh Mai mik th

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1. a, $Ca$, $K_2O$.

   $Ca+2H_2O\to Ca(OH)_2+H_2$

   $K_2O+H_2O\to 2KOH$

   b, $Ca$, $Zn$, $Al_2O_3$ $K_2O$, $NaOH$, $Cu(OH)_2$, $CaCO_3$, $AgNO_3$.

   $Ca+2HCl\to CaCl_2+H_2$

   $Zn+2HCl\to ZnCl_2+H_2$

   $Al_2O_3+6HCl\to 2AlCl_3+3H_2O$

   $K_2O+2HCl\to 2KCl+H_2O$

   $NaOH+HCl\to NaCl+H_2O$

   $Cu(OH)_2+2HCl\to CuCl_2+2H_2O$

   $CaCO_3+2HCl\to CaCl_2+CO_2+H_2O$

   $AgNO_3+HCl\to AgCl+HNO_3$

   c, $Zn$, $Al_2O_3$, $AgNO_3$, $CuCl_2$.

   $Zn+2KOH\to K_2ZnO_2+H_2$

   $Al_2O_3+2KOH\to 2KAlO_2+H_2O$

   $2AgNO_3+2KOH\to Ag_2O+2KNO_3+H_2O$

   $CuCl_2+2KOH\to Cu(OH)_2+2KCl$

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2. `a,`

   `Ca+2H_2O->Ca(OH)_2+H_2`

   `K_2O+H_2O->2KOH`

   `b,`

   `Ca+2HCl->CaCl_2+H_2`

   `Zn+2HCl->ZnCl_2+H_2`

   `Al_2O_3+6HCl->2AlCl_3+3H_2O`

   `K_2O+2HCl->2KCl+H_2O`

   `NaOH+HCl->NaCl+H_2O`

   `Ca(OH)_2+2HCl->CuCl_2+2H_2O`

   `CaCO_3+2HCl->CaCl_2+H_2O`

   `AgNO_3+HCl->AgCl+HNO_3`

   `c,`

   `Zn+2KOH->K_2ZnO_2+2H_2`

   `Al_2O_3+2KOH->2KAlO_2+H_2O`

   `2AgNO_3+2KOH->Ag_2O+H_2O+2KNO_3`

   `CuCl_2+2KOH->2KCl+Cu(OH)_2`

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