a study of alka-seltzer in different types of liquids abstract introduction

RESULTS AND DISCUSSION
Figure 4: The pH of before and after an Alka-Seltzer was put into each liquid
It was found that Lemon Juice had the most dramatic change in pH. This is because Lemon
Juice starts with a very acidy pH of 2, there for the Alka-Seltzer does what it was made to do,
neutralize the acid. Also the stomachs pH is from 1.5 to 3.5, so Alka-Seltzer is made to tackle
low pH liquids. However the Orange Juice’s pH only changed by 1 pH. This is because Alka-
Seltzer is made to neutralize the pH of something, and 7 is the base pH. The White Distilled
Vinegar only changed by 2 pH, and ended with 6 as its final pH because Alka-Seltzer was made
to change the pH of liquids like Gastric Acid (Stomach acid), and dissolve in things like water.
Time to dissolve (sec)
pH of liquid
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
60
50
40
30
20
10
0
Lemon Juice Orange Juice White Distilled
Vinegar
Type of liquid
Before PH
After PH
0 2 4 6 8 10
Amount of tablet parts
Figure 5: The time taken to dissolve in 100mL of water.
It was found that it was most effective to break apart the tablet into 4 pieces when trying to
dissolve the tablet quicker. This is because Alka-Seltzer relies on a thing called the Nucleation