Question

2018-07-25t19:45:23+05:30 what are indicators? give example of an indicator and write its effect on acid base and water.

Answer 1

Chemical indicator, any substance that gives a visible sign, usually by a colour change, of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution. An example is the substance called methyl yellow, which imparts a yellow colour to an alkaline solution.