pH indicator is a chemical compound that is added in small amounts to a solution so that the pH (acidity or alkalinity) of the solution can be determined easily. pH indicators are usually weak acids or bases themselves. They detect the presence of hydronium ions (H3O+) or hydrogen ions (H+).
Using the pH paper Merck no. 9565 the color is green (pH approx. 3-3,5).
Ph of colourless aerated drinks
Ph value of Onion is 3.
between 5 and 6.
ph value is 6
red
It depends on its nature either it is concentrated or dilluted but most of the time it shows red colour on pH paper
Aspirin is acidic, so it would turn red.
As soap is alkaline in nature, it turns red litmus paper blue
Energy dissipation in wet paper is very low and hence Save less sound, in fact no sound.
As orange contains acidic substances, a piece of pH paper would indicate a colour which is in the acid range and the strict colour may differ according to the fruit too.
Red
blue
light pink
It will become red !
Lemon juice contains citric acid so blue litmus paper dipped in lemon juice will turn red indicating that it is acidic.
blue
Otgfcch
red
dark pink
Lemon juice is an acid and blue litmus paper turns red when dipped in an acidic liquid.
blue