Question

what are indicators?name any three indicators and state the colour change which takes place in 1.acids 2. bases

Answer 1

an indicator is a dye that change colour when it's put in a acid or a base
3 indicator are
(1)
litmus
acid-----blue litmus to red
base-----red litmus to blue
(2)
methyl orange
acid----red
base----yellow
(3)
phenolphthalein
acid-----colourless
base-----pink
hope this will help you dear

Answer 2

Answer:

Chemical indicators are any substance that provides definite evidence of the presence or absence of a threshold concentration of a chemical species, such as an acid or an alkali in a solution, often by a color change. An alkaline solution gets its yellow color from a substance called methyl yellow, for example.

Explanation:

An indicator is a dye that, when placed in an acid or a base, changes color.

A color shift in an indicator lets us know whether a certain chemical is an acid or a basic.

The state of the color change which takes place in acids and bases is as follows below:

       Indicator                  Acid                       Basic

1. Red Litmus                 Red                        Blue
2. Blue Litmus                 Red                         Blue
3. Phenolphthalein       Colourless          Pink
4. Methyl Orange          Red         Yellow

Hence, the color change which takes place in acid and base is explained above.

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