Question

what is Indicator?Name the different types of Indicators and their colour in the presence of acids and base? ​

Answer 1

Answer:

Indicator Range

IndicatorColourpH rangeMethyl Orangered3.2 - 4.4Bromocresol Greenyellow3.8 - 5.4Methyl Redyellow4.8 - 6.0Bromothymol Blueyellow6.0 - 7.6

Explanation:

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Answer 2

Answer:

$\huge{\textbf{{\color{navy}{Ans}}{\purple{we}}{\pink{r}}{\color{pink}{↓}}}}$

✎An indicator is a substance that changes its color in acidic and basic medium. An indicator shows one color in an acidic medium and different colors in a basic medium so that they are called indicators.

✎There are different types of indicators: Indicators derived from natural sources are called natural indicators.eg:- Litmus, red cabbage.

✎Indicators prepared in the laboratory are called synthetic indicators. eg:- Phenophtaline

✎Olfactory indicators are which give different odors in acidic and basic medium. eg:-Onion, vanilla essence, etc.

•Litmus - Red for acid and Blue for Base

•Bromothymol blue - Yellow for acid and Blue for Base.

•Thymol blue - Yellow for acid and Blue for Base

•Phenolphthalein - Colorless for acid and Pink for Base.

Explanation:

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