Question

[ChanBaek Lovers]

⚡Hoàn thành chuỗi phản ứng ghi rõ điều kiện nếu có:

a) CO₂ ➝ CaCO₃ ➝ Ca(HCO₃)₂ ➝ CO₂ ➝ C ➝ CO ➝ CO_2.

b) C ➝ CO₂ ⇌ Na₂CO₃ ➝ BaCO₃ ⇌ Ba(HCO₃)₂ ➝ Ba(NO₃)₂ ➝ HNO₃ ➝ Fe(NO₃)₃ ➝ Fe₂O_3.

c) SiO₂ ➝ Si ➝ Na₂SiO₃ ⇌ H₂SiO₃ ➝ SiO₂ ➝ CaSiO₃.

Answer 1

[B.Thị Anh Thơ]

a,

CO2+ CaO \(\underrightarrow{^{to}}\) CaCO3

CaCO3+ CO2+ H2O\(\rightarrow\) Ca(HCO3)2

Ca(HCO3)2\(\underrightarrow{^{to}}\) CaCO3+ CO2+ H2O

CO2+ 2Mg\(\underrightarrow{^{to}}\) 2MgO+ C

2C+ O2( thiếu) \(\underrightarrow{^{to}}\) 2CO

CO+ 1/2O2 \(\underrightarrow{^{to}}\) CO2,

b,

C+ O2 \(\underrightarrow{^{to}}\) CO2

CO2+ 2NaOH \(\rightarrow\) Na2CO3+ H2O

Na2CO3+ BaCl2 \(\rightarrow\) BaCO3+ 2NaCl

BaCO3+ CO2+ H2O \(\rightarrow\)Ba(HCO3)2

Ba(HCO3)2+ 2HNO3 \(\rightarrow\) Ba(NO3)2+ 2CO2+ 2H2O

Ba(NO3)2+ 2H2SO4 \(\rightarrow\) BaSO4+ 2HNO3

Fe(OH)3+ 3HNO3\(\rightarrow\) Fe(NO3)3+ 3H2O

2Fe(NO3)3 \(\underrightarrow{^{to}}\) Fe2O3+ 6NO2+ 3/2O2

c,

SiO2+ C \(\underrightarrow{^{to}}\) Si+ CO2

Si+ 2NaOH+ H2O\(\underrightarrow{^{to}}\)Na2SiO3+ H2O

Na2SiO3+ 2HCl \(\rightarrow\) 2NaCl+ H2SiO3

H2SiO3\(\underrightarrow{^{to}}\) SiO2+ H2O

SiO2+ CaO\(\underrightarrow{^{to}}\) CaSiO3