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Litmus paper is an indicator that turns red in acidic solutions and blue in alkaline solutions.

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1y ago

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One indicator that changes colour in an acid and alkali solution?

Litmus paper is an indicator that changes color in acid and alkali solutions. In an acid solution, litmus paper turns red, while in an alkali solution, it turns blue.


What colour does universal indicator go in a alkali?

Universal indicator turns shades of blue or purple in an alkali.


What would be the reaction of a litmus paper to an acid?

It turns red, alkali will turn it blue. A better alternative would be the univerasal indicator which also shows how strong/weak the acid/alkali is


Indicator that turns red in acid and blue in alkali?

the litmus test. blue means basic, red means acidic.


What colour do you get if you mix litmus solution and alkali?

If you mix litmus solution with an alkali, the litmus solution will turn blue. Litmus is a pH indicator that turns red in acidic solutions and blue in alkaline solutions.


What color does universal indicator turn if acid or alkali is added to it?

Using Standard Ph paper it is bright red. The paper should come with a color scale like so http://jchemed.chem.wisc.edu/jcesoft/cca/CCA3/STILLS/ENDO2/ENDO3/64JPG48/28.JPG


What is an indicator that is pale blue and turns yellow in the presence of an acid?

Bromothymol blue is an indicator that is pale blue in a basic solution and turns yellow in the presence of an acid.


What coulour does universal indicator turn when mixed with strong alkali?

Universal indicator turns deep blue or violet when mixed with a strong alkali.


What turns red in the presence of acid and blue presence of alkali?

A red litmus paper turns blue in the presence of a base/alkali, while a blue litmus paper turns red in the presence of an acid.


How does the color change when a strong acid is added an alkali to neutralise?

The color does not change unless an indicator such as litmus or phenolphthalein is being used. If litmus the color change is blue to red If phenolphthalein the change is red to colorless


How can you test for an acid and an alkali?

You would have to look at the nurk of the base and the whapple of the acid and i it is an xx and yy it would distinguish because then it dismanages it but otherwise if it is xy yx then it physicaly can't distinguish experimentally without tasting it.


What is the colour of litmus paper?

Red/blue red turns to blue to detect alkali blue turns to red to detect acid