Litmus Paper- Blue
Key Properties:
-
Color: The paper is naturally blue.
-
Function: It turns red when exposed to an acidic solution (pH < 7).
-
Acidity Indicator: Used to test for acidity—if the substance being tested is neutral or basic, the paper will remain blue.
-
Size: Typically sold in small strips or sheets that can be dipped into liquids or used to wipe surfaces.
Uses:
-
pH Testing: Used in laboratories, schools, and home chemistry kits to test the acidity or alkalinity of liquids or substances.
-
Classroom Demonstrations: Commonly used in science classrooms to demonstrate acid-base reactions.
-
Field Testing: Often used in environmental monitoring and simple water testing kits to detect acidic substances in soil, water, or chemicals.