The table below shows the pH of four body fluids and the resulting color when each is tested with Red and Blue Litmus Paper.
Body fluid
pH
Red litmus
Blue litmus
Blood
7.4
Turns blue
No change
Bile
8.2
Turns blue
No change
saliva
6.8
No change
Turns red
Gastric fluid (in stomach)
1.7
No change
Turns red
According to the data, what kind of substance is gastric fluid?
A.
It is a weak acid since the blue litmus paper turns red and the pH is 1.7
B.
It is a strong base since the blue litmus paper turns red and the pH is 1.7
C.
It is a weak base since the blue litmus paper turns red and the pH is 1.7
D.
It is a strong acid since the blue litmus paper turns red and the pH is 1.7
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