GCSE SCIENCE CHEMISTRY HIGH SCHOOL - Equations - Balancing - Lithium - Oxide - Oxygen

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Balancing Equations (continued).

The Reaction between Lithium and Oxygen.

(1) Li + O₂ Li₂O
First balance for the metal (lithium).
There is one Li on the left, but two Li on the right.
So, put a 2 before Li on the left.

(2) 2Li + O₂ Li₂O
Secondly, balance for oxygen.
There are two O on the left, but one O on the right.
So, put a 2 before Li₂O on the right.

(3) 2Li + O₂ 2Li₂O
The equation is now balanced for oxygen.
Re-check for lithium.
There are two Li on the left, but now four Li on the right.
So, put a 4 before Li on the left.

(4) 4Li + O₂ 2Li₂O
The equation is now balanced.
There are four Li with two O on the left.
There are four Li with two O on the right.

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