1)
CuO+NO_{2}+O_{2}\\2. 2H_{2}S+3O_{2}->2SO_{2}+2H_{2}O\\3. 2K+H_{2}O->2KOH+H_{2}\\4. 4P+5O_{2}->2P_{2}O_{5}\\5. 2Al+Cr_{2}O_{3}->Al_{2}O_{3}+2Cr\\6. ZnCl_{2}+2NaOH->Zn(OH)_{2}+2NaCl" alt="1. 2Cu(NO_{3})_{2} ->CuO+NO_{2}+O_{2}\\2. 2H_{2}S+3O_{2}->2SO_{2}+2H_{2}O\\3. 2K+H_{2}O->2KOH+H_{2}\\4. 4P+5O_{2}->2P_{2}O_{5}\\5. 2Al+Cr_{2}O_{3}->Al_{2}O_{3}+2Cr\\6. ZnCl_{2}+2NaOH->Zn(OH)_{2}+2NaCl" align="absmiddle" class="latex-formula">
2)
ZnO\\2. 2Al+3S->Al_{2}S_{3}\\3. Ca+Cl_{2}->CaCl_{2}\\4. HI->H_{2}+I_{2}\\5. Zn+HCl->ZnCl_{2}+H_{2}\\6. 3HCl+Al(OH)_{3}->AlCl_{3}+3H_{2}O\\7. Fe_{2}O_{3}+H_{2}->2FeO+H_{2}O\\8. H_{2}O->2H_{2}+O_{2}\\9. 2Na+O_{2}->Na_{2}O_{2}\\10. Ba+Cl_{2}->BaCl_{2}\\11. H_{2}SO_{4}+CuO->CuSO_{4}+H_{2}O" alt="1. Zn+O_{2}->ZnO\\2. 2Al+3S->Al_{2}S_{3}\\3. Ca+Cl_{2}->CaCl_{2}\\4. HI->H_{2}+I_{2}\\5. Zn+HCl->ZnCl_{2}+H_{2}\\6. 3HCl+Al(OH)_{3}->AlCl_{3}+3H_{2}O\\7. Fe_{2}O_{3}+H_{2}->2FeO+H_{2}O\\8. H_{2}O->2H_{2}+O_{2}\\9. 2Na+O_{2}->Na_{2}O_{2}\\10. Ba+Cl_{2}->BaCl_{2}\\11. H_{2}SO_{4}+CuO->CuSO_{4}+H_{2}O" align="absmiddle" class="latex-formula">
3)
MgCl_{2}+H_{2}\\2. P+O_{2}->P_{2}O_{5}\\3. N_{2}+O_{2}->2NO\\4. H_{2}O->H_{2}+O_{2}\\5. WO_{3}+3H_{2}->H_{2}O+W\\6. Ag+O_{2}->Ag_{2}O\\7. 2Li+Br_{2}->2LiBr\\8. H_{2}+I_{2}->2HI" alt="1. Mg+2HCl->MgCl_{2}+H_{2}\\2. P+O_{2}->P_{2}O_{5}\\3. N_{2}+O_{2}->2NO\\4. H_{2}O->H_{2}+O_{2}\\5. WO_{3}+3H_{2}->H_{2}O+W\\6. Ag+O_{2}->Ag_{2}O\\7. 2Li+Br_{2}->2LiBr\\8. H_{2}+I_{2}->2HI" align="absmiddle" class="latex-formula">