Litmus Paper ●

Primarily used to test for acids. It remains blue in basic or neutral solutions and turns red in acidic ones.

It cannot differentiate between weak and strong acids (e.g., pH 1 vs. pH 3). It is also susceptible to interference from other substances in a solution that might affect the dye's appearance. litmus paper

The primary purpose of litmus paper is to provide a quick, qualitative assessment of a substance's nature. Unlike pH strips or digital meters, it does not provide an exact numerical pH value; instead, it indicates a range where a color change occurs, typically between pH 4.5 and 8.3. Turn blue litmus paper red . Bases: Turn red litmus paper blue . Primarily used to test for acids

), the paper must be with distilled water first so the gas can dissolve and produce ions. Unlike pH strips or digital meters, it does

Litmus paper only reacts in the presence of water. To test dry gases (like HClcap H cap C l NH3cap N cap H sub 3

Used for testing the acidity of soil, water, household chemicals (like vinegar or baking soda), and even in medical settings to assess body fluid pH.

Record the color change immediately. Most changes occur within seconds.