Is photosynthesis a double replacement or single replacement reaction?

1 Answer
Sep 12, 2015

Photosynthesis is a single displacement reaction.

Explanation:

This is the formula for photosynthesis:

6CO_2 + 6H_2O -> 6O_2 + C_6H_12O_6

During the light reactions, the water molecules' hydrogen ions are separated from the oxygen atoms, which combine to form oxygen gas molecules which are released into the atmosphere as a waste product.

During the Calvin cycle, CO2 and hydrogen ions from the water combine to form glucose C_6H_12O_6.