Which are the types of indicators?
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Phenolphthalein
Litmus paper
Methyl orange
Turmeric
Rose(Ph )
Other natural indicaters
Litmus paper
Methyl orange
Turmeric
Rose(Ph )
Other natural indicaters
ambhoreanandow2iic:
1) Universal indicator
2) Litmus paper
3) Phenolphthalein
4) Methyl orange
Answered by
1
There are 3 types of indincators
,Natural, universal, Synthetic
Some of them are litmus, tumeric, jamun, metlyl orange, phenolphthalien
Hope it helpa u☝
,Natural, universal, Synthetic
Some of them are litmus, tumeric, jamun, metlyl orange, phenolphthalien
Hope it helpa u☝
Universal indicator is a mixture of coloured compounds, which is used for simple testing of solutions. It is of no use for titrations as there are several colour changes that take place over a variety of pH values.
Litmus is a vegetable based dye that was used in schools before the advent of universal indicator. It has a simple colour scheme, in acids it turns red and in bases it turns blue, however the mid-point is not sharply defined and is unsuitable for titrations.
Litmus paper when previously dampened can also be used to test for the acidity of gases.
Litmus paper when previously dampened can also be used to test for the acidity of gases.
Phenolphthalein is an organic indicator with a pKa value of 9.3. It is red in bases and colourless in acids.
Methyl orange is an acid base indicator that turns red in acidic solution and yellow in base, the mid-point colour is orange. Its pKa value is 3.4.
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