viết pt phân tử , pt ion đầy đủ , pt ion rút gọn cho các phản ứng sau:
1, Na2CO3 + Ca(OH)2
2, CuSO4 +Na2S
3, NaHCO3 +HCl
4, NaHCO3 +NaOH
5, HClO+ KOH
6, FeS(r) +HCl
viết pt phân tử , pt ion đầy đủ , pt ion rút gọn cho các phản ứng sau: 1, Na2CO3 + Ca(OH)2 2, CuSO4 +Na2S 3, NaHCO3 +HCl 4, NaHCO3 +NaOH 5, HClO+ KOH
By Samantha
Em tham khảo nha:
\(\begin{array}{l}
1)\\
N{a_2}C{O_3} + Ca{(OH)_2} \to CaC{O_3} + 2NaOH\\
2N{a^ + } + C{O_3}^{2 – } + C{a^{2 + }} + 2O{H^ – } \to CaC{O_3} + 2N{a^ + } + 2O{H^ – }\\
C{O_3}^{2 – } + C{a^{2 + }} \to CaC{O_3}\\
2)\\
CuS{O_4} + N{a_2}S \to CuS + N{a_2}S{O_4}\\
C{u^{2 + }} + S{O_4}^{2 – } + 2N{a^ + } + {S^{2 – }} \to CuS + 2N{a^ + } + S{O_4}^{2 – }\\
C{u^{2 + }} + {S^{2 – }} \to CuS\\
3)\\
NaHC{O_3} + HCl \to NaCl + C{O_2} + {H_2}O\\
N{a^ + } + HC{O_3}^ – + {H^ + } + C{l^ – } \to N{a^ + } + C{l^ – } + C{O_2} + {H_2}O\\
HC{O_3}^ – + {H^ + } \to C{O_2} + {H_2}O\\
4)\\
NaHC{O_3} + NaOH \to N{a_2}C{O_3} + {H_2}O\\
N{a^ + } + HC{O_3}^ – + N{a^ + } + O{H^ – } \to 2N{a^ + } + C{O_3}^{2 – } + {H_2}O\\
HC{O_3}^ – + O{H^ – } \to C{O_3}^{2 – } + {H_2}O\\
5)\\
HClO + KOH \to KClO + {H_2}O\\
HCl{O } + {K^ + } + O{H^ – } \to {K^ + } + Cl{O^ – } + {H_2}O\\
HCl{O } + O{H^ – } \to Cl{O^ – } + {H_2}O\\
6)\\
FeS + 2HCl \to FeC{l_2} + {H_2}S\\
FeS + 2{H^ + } + C{l^ – } \to F{e^{2 + }} + 2C{l^ – } + {H_2}S\\
FeS + 2{H^ + } \to F{e^{2 + }} + {H_2}S
\end{array}\)
Đáp án:
Na2CO3+Ca(OH)2→CaCO3+2NaOH2Na++CO32−+Ca2++2OH−→CaCO3+2Na++2OH−CO32−+Ca2+→CaCO32)CuSO4+Na2S→CuS+Na2SO4Cu2++SO42−+2Na++S2−→CuS+2Na++SO42−Cu2++S2−→CuS3)NaHCO3+HCl→NaCl+CO2+H2ONa++HCO3−+H++Cl−→Na++Cl−+CO2+H2OHCO3−+H+→CO2+H2O4)NaHCO3+NaOH→Na2CO3+H2ONa++HCO3−+Na++OH−→2Na++CO32−+H2OHCO3−+OH−→CO32−+H2O5)HClO+KOH→KClO+H2OHClO+K++OH−→K++ClO−+H2OHClO+OH−→ClO−+H2O6)FeS+2HCl→FeCl2+H2SFeS+2H++Cl−→Fe2++2Cl−+H2SFeS+2H+→Fe2++H2S1)Na2CO3+Ca(OH)2→CaCO3+2NaOH2Na++CO32−+Ca2++2OH−→CaCO3+2Na++2OH−CO32−+Ca2+→CaCO32)CuSO4+Na2S→CuS+Na2SO4Cu2++SO42−+2Na++S2−→CuS+2Na++SO42−Cu2++S2−→CuS3)NaHCO3+HCl→NaCl+CO2+H2ONa++HCO3−+H++Cl−→Na++Cl−+CO2+H2OHCO3−+H+→CO2+H2O4)NaHCO3+NaOH→Na2CO3+H2ONa++HCO3−+Na++OH−→2Na++CO32−+H2OHCO3−+OH−→CO32−+H2O5)HClO+KOH→KClO+H2OHClO+K++OH−→K++ClO−+H2OHClO+OH−→ClO−+H2O6)FeS+2HCl→FeCl2+H2SFeS+2H++Cl−→Fe2++2Cl−+H2SFeS+2H+→Fe2++H2S