Question

A colorless sample was tested with a strip of ph paper. The colour of strip changed to green. The ample should be

Answer 1

The sample should be either neutral or slightly basic.

• pH paper is a visual indicator which determines the acidic and basic nature of compounds.
• It exhibits different colors for different pH.
• Usually different brands of pH paper have their own color scheme.
• However, at pH = 7 and beyond (up to 9), a green color change, which intensifies at higher pH, indicates the presence of a basic compound.

Answer 2

Answer: distilled water

Explanation:

Because under pH scale distilled water is said to be neutral