Question

The substances sodium (Na), oxygen (O2), and sodium oxide (Na2O) participate in this chemical reaction:
4Na + O2 → 2Na2O.
Which statement best describes the reaction?

A.
Elements rearrange, but no compounds are created or destroyed.
B.
Sodium oxide is created by the chemical reaction.
C.
Atoms from sodium oxide rearrange to form sodium and oxygen.
D.
In a mixture of the three substances, sodium oxide separates from the sodium and oxygen.

Answer 1

B. sodium oxide is created by the chemical reaction

Answer 2

Answer : The correct option is, B.

Explanation :

Chemical reaction : When one or more reactants molecule react to give different products. Elements rearrange to produced new compounds.

The given balanced chemical reaction is,

$4Na+O_2\rightarrow 2Na_2O$

In this reaction, 4 moles of sodium metal react with 1 mole of oxygen gas to give 2 moles of sodium oxide.

Therefore, the correct answer is, Sodium oxide is created by the chemical reaction.