Bài 6: Hoàn thành các PTHH khi trộn lẫn dd của các chất sau 1. dd KHSO4 + dd Ba(HCO3)2 3, dd NaHCO3+ dd NH4Cl 5, dd NaHS + dd NaHSO4 dd NaOH 7. dd (NH4)2CO3+ 9, dd NaCO3+ dd FeCl3 2. dd KHCO3 + dd Ca(OH)2 4. dd NaHCO3 + dd HCl 6. dd NaHSO4 + dd CH3COONa 8. dd (NH4)2CO3 + dd HCI 10. dd NaCO3 + dd Al(NO3)3 Giúp tớ vớiiii

Tham khảo :

$1,$

$H^+SO_4^{2-}+Ba^{2+}+HCO_3^{-} \to CO_2+H_2O+BaSO_4$

`->`$2KHSO_4+Ba(HCO_3)_2 \to K_2SO_4+BaSO_4+2CO_2+H_2O$

$2.$

$HCO_3^{-} + OH^- \to CO_3^{2-}+H_2O$

`->`$KHCO_3+Ca(OH)_2 \to KOH+CaCO_3+2H_2O$

$3,$ Không phản ứng.

$4.$

$HCO_3^{-}+H^+ \to CO_2+H_2O$

`->`$NaHCO_3+HCl \to NaCl+H_2O+CO_2$

$5,$

$HS^-+H^\to H_2S$

`->`$NaHS+NaHSO_4 \to Na_2SO_4+H_2S$

$6.$

$H^++CH_3COO^- \to CH_3COOH$

`->`$NaHSO_4+CH_3COONa \to CH_3COOH+Na_2SO_4$

$7,$

$NH_4^{+}+OH^- \to H_2O+NH_3$

`->`$(NH_4)_2CO_3+2NaOH \to 2H_2O+Na_2CO_3+2NH_3$

$8.$

$CO_3^{2-} +2H^+ \to CO_2+H_2O$

`->`$(NH_4)_2CO_3+2HCl \to 2NH_4Cl+CO_2+H_2O$

$9,$

$CO_3^{2-} + H_2O $$\rightleftharpoons$ $2OH^-+CO_2$

$Fe^{3+}+3OH^- \to Fe(OH)_3$

`=>`$CO_3^{2-}+H_2O+Fe^{3+} +OH^- \to Fe(OH)_3+CO_2$

`->`$3Na_2CO_3+3H_2O+2FeCl_3 \to 2Fe(OH)_3+3CO_2+6NaCl$

$10,$

$CO_3^{2-} + H_2O $$\rightleftharpoons$ $2OH^-+CO_2$

$Al^{3+}+3OH^- \to Al(OH)_3$

`=>`$CO_3^{2-}+H_2O+Al^{3+}+OH^- \to CO_2+Al(OH)_3$

`->`$3Na_2CO_3+2Al(NO_3)_3 +3H_2O\to 2Al(OH)_3+6NaNO_3+3CO_2$