Chemistry Reference
In-Depth Information
3. Allow the mixture to settle while you set up a vacuum filtration
flask by placing the filtration funnel in the flask and connecting
a hose to the vacuum valve. Place a piece of filter paper in the
top of the funnel.
4. Pour the water/lime-soda ash mixture slowly into the filtration
apparatus. Turn on the vacuum to begin the filtration process.
5. When filtration is complete, turn off the vacuum and remove
the beaker from below the apparatus. Set aside the beaker of
water for procedure step 5.
C. Ion Exchange Resin Treatment
1. Place a piece of filter paper in the top of a funnel and fill the
funnel with ion exchange resin beads.
2. Place the funnel over a large beaker.
3. Measure 200 ml of hard water and pour it slowly into the
funnel containing resin beads.
4. Allow the water to filter through the resin and collect the
softened water from the large beaker. Set aside the beaker of
water for procedure step 5.
5. Measure 2 ml of the softened water from each procedure
and repeat the foaming action test from step 1. Record your
observations on the data table.
6. Rank all four samples tested—those tested in step 1 and those
tested in step 5—in order of foaming action from 1 to 4, with the
sample foaming least as 1, and the sample foaming most as 4.
Data Table
Treatment 1
_____________
Treatment 2
_____________
Sample
Pure water
Hard water
Observations
Foam rating
Analysis
1. Describe the two methods of water softening you used in this
experiment. Why did you choose these methods?
