a) CaO -> CaCO3 -> CaO -> CaC2 -> Ca(OH)2
b) Na -> NaCl ->NaOH ->Na2CO3-> CO2-> Ca(HCO3)2
a) CaO -> CaCO3 -> CaO -> CaC2 -> Ca(OH)2 b) Na -> NaCl ->NaOH ->Na2CO3-> CO2-> Ca(HCO3)2
By Harper
By Harper
a) CaO -> CaCO3 -> CaO -> CaC2 -> Ca(OH)2
b) Na -> NaCl ->NaOH ->Na2CO3-> CO2-> Ca(HCO3)2
$a)$ CaO + CO2 $→$ CaCO3
CaCO3 $→$ CaO + CO2
2CaO + 5C $→$ 2CaC2 + CO2
CaC2 + 2H2O $→$ Ca(OH)2 + C2H2
$b)$ 2Na + Cl2 $→$ 2NaCl
2NaCl + 2H2O $→$ 2NaOH + Cl2 + H2
2NaOH + CO2 $→$ Na2CO3 + H2O
Na2CO3 $→$ CO2 + Na2O
CO2 + H2O + CaCO3 $→$ Ca(HCO3)2
Giải thích các bước giải:
a)CaO+$CO_{2}$ →$CaCO_{3}$
$CaCO_{3}$→ CaO+$CO_{2}$
2CaO+5C →$2CaC_{2}$+$CO_{2}$
$CaC_{2}$+$2H_{2}O$ →$Ca(OH)_{2}$ +$C_{2}$$H_{2}$
b)2Na+$Cl_{2}$ →2NaCl
2NaCl+$2H_{2}O$ →2NaOH+$Cl_{2}$+$H_{2}$
2NaOH+$CO_{2}$ →$Na_{2}CO3$ +$H_{2}O$
$Na_{2}CO3$→ $Na_{2}O$+ $CO_{2}$
$CO_{2}$+ $H_{2}O$+ $CaCO_{3}$→Ca(HCO3)2