I gimnazjum

II gimnazjum

&nbsp; 1. CaCO3​+2HCl→CaCl2​+H2​O+CO2​↑

H2​CO3​ &nbsp;,&nbsp; H3​PO4​ &nbsp; &nbsp; Mg(NO3​)2​+H2​CO3​→MgCO3​↓+2HNO3​ &nbsp; HgCl2​+H2​CO3​→HgCO3​↓+2HCl

a) 2Na+2H2​O→2NaOH+H2​

a)&nbsp; Mg+2HCl→MgCl2​+H2​ &nbsp; b)&nbsp; Mg+2H2​O→Mg(OH)2​+H2​

a) 2K+2H2​O→2KOH+H2​ b) 2K+2HCl→2KCl+H2​

a) &nbsp; 1. 4Al+3O2​→2Al2​O3​ 2. Al2​O3​+6HCl→2AlCl3​+3H2​O 3. 2Al+6HCl→2AlCl3​+3H2​