Q3 of 58 Page 32

Which is the reducing agent in the following reaction?

MnO2(s) + 4HCl (aq) → MnCl2(s) + 2H2O(ℓ) + Cl2(ℓ)

HCl is oxidized by gaining oxygen atoms. Thus, HCl is a reducing agent as it undergoes oxidation.

More from this chapter

All 58 →
1

Calcium oxide reacts vigorously with water to produce:

 2

The reaction, 3MnO2(s) + 4Al(s) → 3Mn(ℓ) + 2Al2O5(s) + Heat is

an example of:

 4

Which is the oxidizing agent in the following reaction?

CuO(s) + H2(g) → Cu(s) + H2O(ℓ)

 5

The coating formed on the metals such as iron, silver and copper after corrosion will be: