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ASSESS
YOURSELF
Determine the oxidizing agent and reducing agent in the
following reactions
a.Cl2(aq)+2Br-(aq)-2Cl-(aq)+Br2(aq)
b. PbS(s) + O2(g) ---> PbO(s) + SO2 (g)
c. Cl2 + 2NaBr>2NaCl + Br2
.d. MgO + H2O→ Mg(OH)2


Sagot :

Answer:

a. Cl2(aq) + 2Br-(aq) → 2Cl-(aq) + Br2(aq)

Oxidizing agent: Cl2

Reducing agent: Br-

b. PbS(s) + O2(g) → PbO(s) + SO2(g)

Oxidizing agent: O2

Reducing agent: PbS

c. Cl2 + 2NaBr → 2NaCl + Br2

Oxidizing agent: Cl2

Reducing agent: Br-

d. MgO + H2O → Mg(OH)2

In this reaction, neither MgO nor H2O are being oxidized or reduced. It is a neutralization reaction between the basic oxide MgO and water to form the basic hydroxide Mg(OH)2.