Question

hoàn thành phương trình hóa học theo sơ đồ sau:

CaO\(\underrightarrow{\left(1\right)}Ca\left(OH\right)2\underrightarrow{\left(2\right)}CaCl2\)

CaCO3\(\underrightarrow{\left(3\right)}CaCl2\)

Ca(OH)2\(\underrightarrow{\left(4\right)}\)CaCO3

CaCO3\(\underrightarrow{\left(5\right)}\)CaO

Answer 1

CaO+H2O--->Ca(OH)2

Ca(OH)2+ 2HCl--->CaCl2+2H2O

CaCl2+ MgCO3---->CaCO3+MgCl2

CaCO3+2HCl---->CaCl2+H2O+CO2

CaCl2+2NaOH---->Ca(OH)2+2NaCl

Ca(OH)2+CO2--->CaCO3+H2O

CaCO3---->CaO+CO2

Answer 2

\(1.\text{CaO + H2O = Ca(OH)2 }\)

\(2.\text{Ca(OH)2+CuCl2→Cu(OH)2↓+CaCl2}\)

\(3.\left\{{}\begin{matrix}\text{(NH4)2CO3+CaCl2=CaCO3↓+2NH4Cl}\\\text{CaCl2+Na2CO3=CaCO3↓+2NaCl}\end{matrix}\right.\)

\(4.\left\{{}\begin{matrix}\text{CaCO3+2HCl(dung dịch pha loãng)=CaCl2+CO2↑+H2O}\\\text{CaCO3+2NH4Cl(đậm đặc)=CaCl2+2NH3+H2O+CO2}\end{matrix}\right.\)

\(5.\left\{{}\begin{matrix}\text{CaCl2+2H2O(hơi nước)=Ca(OH)2+2HCl}\\\text{CaCl2+2NaOH(đậm đặc)=Ca(OH)2↓+2NaCl}\end{matrix}\right.\)

\(6.\text{Ca(OH)2 + CO2 = CaCO3 + H2O}\)

\(7.\left\{{}\begin{matrix}\text{CaCO3=CaO+CO2}\\\text{CaCO3+C(cốc)=CaO+2CO}\end{matrix}\right.\)

Answer 3

(1) CaO+H2O->Ca(OH)2

(2)Ca(OH)2+2HCl->CaCl2+2H2O

(3)CaCO3+2HCl->CaCl2+H2O+CO2

(4)Ca(OH)2+CO2->CaCO3+H2O

(5)CaCO3-to->CaO+CO2

Answer 4

https://i.imgur.com/LPPxUiW.jpg