Which oxide is formed when potassium is heated in excess of oxygen?

Question

Which oxide is formed when potassium is heated in excess of oxygen? (A) K2O (B) KO (C) K2O2 (D) KO2

Tardigrade Admin · Accepted Answer

Burning K in excess O 2 gives the superoxide K O 2. Reaction with a large excess of metal will form the Oxide K 2 O. The superoxide reacts with water to form the peroxide, K 2 O 2, at low T and the oxide at higher T both with liberation of O 2.

Q. Which oxide is formed when potassium is heated in excess of oxygen?

$K_{2} O$

$K O$

$K_{2} O_{2}$

$K O_{2}$

Burning $K$ in excess $O_{2}$ gives the superoxide $K O_{2}$ . Reaction with a large excess of metal will form the Oxide $K_{2} O$ . The superoxide reacts with water to form the peroxide, $K_{2} O_{2}$ , at low $T$ and the oxide at higher $T$ both with liberation of $O_{2}$ .

Q. Which oxide is formed when potassium is heated in excess of oxygen?

K2​O

KO

K2​O2​

KO2​

Burning K in excess O2​ gives the superoxide KO2​. Reaction with a large excess of metal will form the Oxide K2​O. The superoxide reacts with water to form the peroxide, K2​O2​, at low T and the oxide at higher T both with liberation of O2​.

$K_{2} O$

$K O$

$K_{2} O_{2}$

$K O_{2}$

Burning $K$ in excess $O_{2}$ gives the superoxide $K O_{2}$ . Reaction with a large excess of metal will form the Oxide $K_{2} O$ . The superoxide reacts with water to form the peroxide, $K_{2} O_{2}$ , at low $T$ and the oxide at higher $T$ both with liberation of $O_{2}$ .