Question

Q16- Consider reaction: Na(s) + O₂(g) → Na₂O. Moles of oxygen needed to

balance equation are

A) 1

B) 2

C) 3

D) 4​

Answer 1

Answer:

correct answer= 4

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Answer 2

Answer:

The Correct Answer is Option (A): 1

Explanation:

To balance a reaction means to make the number of atoms the same on both the reactants and products side

Considering the reaction

Na + $O_{2} => Na_{2}O$

Balancing the Metal,

4Na + $O_{2} => 2Na_{2}O$

The equation is balanced now and hence the moles of oxygen that needs to be balanced are 1