Question

Viết PTHH cho mỗi chuyển đổi sau:

CaO\(\underrightarrow{\left(1\right)}\)CaCO\(_3\)\(\underrightarrow{\left(2\right)}\)CaO\(\underrightarrow{\left(3\right)}\)Ca(OH)\(_2\)\(\underrightarrow{\left(4\right)}\)CaCl\(_2\)

Answer 1

( 1) \(CaO+CO_2\rightarrow CaCO_3\)

( 2 ) \(CaCO_3\underrightarrow{t^0}CaO+CO_2\uparrow\)

( 3) \(CaO+H_2O\rightarrow Ca\left(OH\right)_2\)

( 4 ) \(Ca\left(OH\right)_2+MgCl_2\rightarrow CaCl_2+Mg\left(OH\right)_2\downarrow\)

Answer 2

1) CaO + CO₂ → CaCO₃

2) CaCO₃ → CaO + CO₂ (t^o)

3) CaO + H₂O → Ca(OH)₂

4) Ca(OH)₂ + 2HCl → CaCl₂ + 2H₂O

Answer 3

1) CaO + CO₂ → CaCO₃

2) CaCO₃ \(\underrightarrow{t^o}\) CaO + CO₂

3) CaO + H₂O → Ca(OH)2

4) Ca(OH)₂ + 2HCl → CaCl₂ + 2H₂O