Title:
Which Brand of Antacid Tablet is the Best
To use a PH indicator solution to determine
which antacid tablet is the most effective.
I think that the CVS brand of antacid tablet
will be the most effective.
1 red cabbage, pot, heat source, graduated
cylinder, water, strainer, funnel, beaker,
pipet, vinegar, club soda, baking soda,
ammonia, 5 test tubes, 4 different brands of
antacid tablets, Ziploc bag, camera
1. Fill a pot about ½ full of torn pieces of red
cabbage
2. Add 300ml of water. Boil on high for 5
minutes
3. Strain the liquid out through a piece of
strainer over a funnel and into a container.
4. Create a scale by filling 5 test tubes with
the following substance
5. Add cabbage indicator to each tube.
Record your results.
6. Obtain a zipper-lock bag.
7.Add 5ml of vinegar 10ml of water and
enough cabbage juice to impart a distinct
color. Record your observations.
8. Add your assigned antacid to the bag,
squeeze out the excess air, and seal the bag
9. Squeeze the antacid tablet to break it up
into small pieces.
10. When the reaction has ceased record the
color and approximate ph value .
11. Compare your data of all the antacids to
determine the most effective brand of
antacid.
12. Calculate the amount of active ingredient
per tablet in mg.
In conclusion all of the antacids will neutralize
stomach acid but the most effective was the Rolaids
brand because it was proven to contain the most
base, which means that it will neutralize more acid. I
think this is because it had two active ingredients. All
of the antacids contained Calcium carbonate but the
Rolaid brand also had Magnesium hydroxide in it as
another active ingredient. The most cost effective
antacid was the CVS brand because it will neutralize
acids and was only $0.04 for each tablet. My
hypothesis was correct in this analysis because the
Rolaid brand cost twice as much as the CVS brand
and the difference in PH value is not twice as much,
only a value of 2.
Experimental Results
Brand
and
Product
Name
Active
ingredients
Amount of
active
ingredient
per tablet
Number
of
tablets
per
bottle
Cost
per
bottle
Cost
per
tablet
Color
PH
Rolaids
Calcium
Carbonate
675mg
30
$2.49
$0.083
Green
13
Magnesium
hydroxide
135mg
Tums
Calcium
Carbonate
500mg
36
$2.99
$0.083
Blue
9
CVS
Calcium
Carbonate
500mg
36
$1.99
$0.055
Blue
9
Rite Aid
Calcium
Carbonate
750 mg
96
$3.99
$0.042
Blue
9
Red Cabbage Indicator PH Chart
Test Tube
Substance
Color
Approximate PH
1
Vinegar
Red
3
2
Club soda
Pink
5
3
Water
Purple
7
4
Baking soda
Blue
9
5
Ammonia
Green
13