MDCAT Chemistry MCQ #5386

A lab technician ignites a piece of sodium metal in a container with a limited supply of dry air. Which oxide is predominantly formed?

MDCAT Chemistry MCQ #5386

  1. Question 1

    Q1. A lab technician ignites a piece of sodium metal in a container with a limited supply of dry air. Which oxide is predominantly formed?

    • A) Sodium peroxide
    • B) Sodium monoxide
    • C) Sodium superoxide
    • D) Sodium ozonide

    Answer: Sodium monoxide

    Explanation: Sodium forms a stable monoxide in limited oxygen; sodium peroxide is the tempting distractor but requires excess oxygen for formation.