Answer:
Ba(ClO₃)₂ (s) ⟶ BaCl₂(s) + 3O₂ (g) REDOX
2 NaCl (aq) + K₂S (aq) ⟶ Na₂S (aq) + 2 KCl (aq) NONE
CaO (s) + CO₂ (g) ⟶ CaCO₃(s) NONE
KOH (aq) + AgNO₃(aq) ⟶ KNO₃(aq) + AgOH (s) PRECIPITATION
Ba (OH)₂(aq) + 2 HNO₂(aq) ⟶ Ba (NO₂)₂(aq) + 2 H₂O (l) NEUTRALIZATION
Explanation:
Redox reaction involves the oxidation states. The oxidation state from an element decreases and the oxidation state from other element increases.
It is called redox because one element reduces and the other oxidizes.
Neutralization reaction occurs when an acid and a base react, to produce water an a determined salt.
Precipitation reaction can be produced when a solid is formed as the reactants react.
Ba(ClO₃)₂ (s) ⟶ BaCl₂(s) + 3O₂ (g) REDOX
Cl changes the oxidation state from 5 to -1 (reduction)
O changes the oxidation state from -2 to 0 (oxidation)
2 NaCl (aq) + K₂S (aq) ⟶ Na₂S (aq) + 2 KCl (aq) NONE
CaO (s) + CO₂ (g) ⟶ CaCO₃(s) NONE
KOH (aq) + AgNO₃(aq) ⟶ KNO₃(aq) + AgOH (s) PRECIPITATION
Ba (OH)₂(aq) + 2 HNO₂( aq ) ⟶ Ba (NO₂)₂(aq) + 2 H₂O (l) NEUTRALIZATION
