В) NaOH → Na 2 CO 3 → CO 2 → MgCO 3
г) Fe → FeCl 3 → Fe (OH) 3 → Fe (NO 3 ) 3
д) Ca → Ca(OH) 2 → CaCl 2 → CaCO 3 → CaO → Ca(NO 3 ) 2

в) 2NAOH + CO2 = NA2CO3 + H2O

NA2CO3 + HCL = NACL + H2O + CO2

CO2 + MgO = MgCO3

г) 2Fe + 3Cl = 2FeCl3

FeCl3 + 3NAOH = Fe (OH) 3 + 3NaCl

Fe (OH) 3 + 3hno3 = Fe (NO3)3 + 3H2O

д) Ca + 2H2O = Ca(OH) 2 + H2

Ca(OH) 2 + 2HCl = CaCl 2 + 2 H2O

CaCl 2 + Na2CO3 = CaCO 3 + 2NaCl

CaCO 3 = CaO + CO2

CaO + 2KNO3 = Ca(NO 3  ) 2 + K2O

Объяснение:

В) NaOH → Na₂CO₃ → CO₂ → MgCO₃

NaOH + FeCO₃ → Na₂CO₃ + Fe(OH)₂↓

Na₂CO₃ + 2HCl → NaCl + CO₂↑ + H₂O

Mg(OH)₂ + CO₂ → MgCO₃ + H₂O

Г) Fe → FeCl₃ → Fe(OH)₃ → Fe(NO₃)₃

2Fe + 3Cl₂ → 2FeCl₃

FeCl₃ + 3NaOH → Fe(OH)₃↓ + 3NaCl

Fe(OH)₃ + 3HNO₃ → Fe(NO₃)₃ + 3H₂O

Д) Ca → Ca(OH)₂ → CaCl₂ → CaCO₃ → CaO → Ca(NO₃)₂

Ca + 2H₂O → Ca(OH)₂ + H₂↑

Ca(OH)₂ + 2HCl → CaCl₂ + 2H₂O

CaCl₂ + Na₂CO₃ → CaCO₃↓ + 2NaCl

CaCO₃ → CaO + CO₂↑

CaO + 2HNO₃ → Ca(NO₃)₂ + H₂O