Question

The table below shows the pH of four body fluids and the resulting color when each

is tested with Red and Blue Litmus Paper. (AKS 6d)
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 juice
No change
Turns red
According to the data what kind of substance is gastric juice?

Answer 1

Gastric juice is an acidic substance ( Strongly acidic)

Step-by-step explanation:

According to the table shown in the question:

• Gastric juice turns blue litmus paper to red
• It is neutral to red litmus

Note: Any substance that turns blue litmus paper red and is neutral to red litmus paper is an acidic substance.

Moreover, gastric juice is a combination of Pepsin and HCl and it has a PH that varies between 1 and 3. This PH is typical of a strongly acidic substance.