Natural sources within a community that can be used as acid-base indicator
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Answered by
3
A natural indicator is a natural substance that can be used to determine the pH of a substance.
Examples:
1. Turmeric:
It is yellow in color, turns reddish brown with base and doesn't change its color with acid.
2. Red Cabbage:
It is purple in color, turns reddish with acid and greenish base.
3. Onion:
Paste or juice of onion looses its smell when added with base but does not changes its smell with acid.
Examples:
1. Turmeric:
It is yellow in color, turns reddish brown with base and doesn't change its color with acid.
2. Red Cabbage:
It is purple in color, turns reddish with acid and greenish base.
3. Onion:
Paste or juice of onion looses its smell when added with base but does not changes its smell with acid.
Answered by
1
Indicators are the substances that helps us to identify whether a given substance is acidic /basic/neutral by changing their colours.
Nature can be considered as a natural laboratory with so many natural indicators like :
Turmeric Indicator :
Turmeric indicator helps to identify basic substance by changing the yellow colour to Dark Red.
Turmeric indicator + acid ---- no change in colour.
Beet Root Indicator :
Beet root Indicator +acid ---> Turns to red.
Beet root Indicator + base ---->turns to green colour.
China rose :
Petals of Hibiscus[china rose ] can used to prepare indicator.
China Rose Indicator + acid ---> turns to red.
China rose indicator + base ---> turns to Green
Red cabbage Indicator :
Red cabbage + base ---> turns to green
Red cabbage + acid ---> turns to red
Onion Olfactory indicator:
The smell of onion can be removed if onion olfactory indicator is added to base.
Nature can be considered as a natural laboratory with so many natural indicators like :
Turmeric Indicator :
Turmeric indicator helps to identify basic substance by changing the yellow colour to Dark Red.
Turmeric indicator + acid ---- no change in colour.
Beet Root Indicator :
Beet root Indicator +acid ---> Turns to red.
Beet root Indicator + base ---->turns to green colour.
China rose :
Petals of Hibiscus[china rose ] can used to prepare indicator.
China Rose Indicator + acid ---> turns to red.
China rose indicator + base ---> turns to Green
Red cabbage Indicator :
Red cabbage + base ---> turns to green
Red cabbage + acid ---> turns to red
Onion Olfactory indicator:
The smell of onion can be removed if onion olfactory indicator is added to base.
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