# What is the relationship between oxygen and photosynthesis?

The process of photosynthesis produces oxygen.

#### Explanation:

The overall equation for photosynthesis is:
$6 C {O}_{2} + 6 {H}_{2} O \to {C}_{6} {H}_{12} {O}_{6} + 6 {O}_{2}$

The oxygen created during photosynthesis is created when light energy is used to split water molecules. This is called the light reaction .

$2 {H}_{2} O \to 2 {H}_{2} + {O}_{2}$

Here is a video which discusses the process of photosynthesis and shows an experiment in which the rate of oxygen production is influenced by available $C {O}_{2}$ levels in water.

The glucose is formed by a separate process called the Calvin cycle.

Hope this helps!