Answer to Question #284506 in General Chemistry for ababa zeleke

Question

1.    Classify the following as acid-base reaction or oxidation-reduction reaction (Identify the atoms that are oxidized and reduced, the change in the oxidation state for each)

a)    Na₂S(aq) + 2HCl(aq) ⟶ 2NaCl(aq) + H₂S(g)

b)    K₃P(s) + 2O₂(g) ⟶ K₃PO₄(s)

Answer 1

1. Is an acid base reaction, the hydrogen ions of an acid are replaced with a cation.
2. Is an oxidation reduction reaction. The oxidation number of P changes from -3 to +5, indicating a Loss of electrons thus is oxidized while O change from 0 to -2 a gain of electrons thus reduced.