Question

Lithium and oxygen react to form lithium oxide. What is the balanced equation for this reaction?

OA
2Li + O2 → LizO
OB. Li + O2 . Lizo
OC 4Li + O2 2L120
.
OD. 2Li + 202 – 4Lizo
X​

Answer 1

C

Step-by-step explanation:

Both lithium and oxygen react to form an ionic bond between them. There is one Oxygen atom on the right side and 2 Oxygen atoms on the left, therefore coefficient 2 is added on right side to balance the oxygen atoms.

Li + O2 --> 2 Li2O

There will be 4 Lithium atoms on right side and 1 Lithium on the left therefore coefficient 4 is added to balance the lithium atoms

4 Li + O2 --> 2 Li2O

The balanced equation is:

4 Li + O2 --> 2 Li2O