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- 8. Reverse Osmosis Osmosis is the diffusion of water through a semipermeable membrane (like cell membranes or dialysis tubing) *We use this to purifiy drinking water *Reverse Osmosis is using energy to “force” the water to go in the opposite direction ! And it requires energy! *It occurs naturally & doesn’t require energy! *The water moves from an area of greater concentration or greater purity to an area of lesser concentration or lesser purity
- 9. Reverse Osmosis is using energy to “force” the water to go in the opposite direction! That means from an area of lesser amount to an area of greater amount. Kelter, Carr, Scott, Chemistry A Wolrd of Choices 1999, page 267 Natural osmosis – water would diffuse in this direction. Reverse osmosis – water if FORCED in this direction