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What turns red in the presence of acid and blue in presence of alkali?
Wiki User
∙ 8y ago
It is Litmus Paper.
Wiki User
∙ 8y ago
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What are two examples of natural indicator of acid and bases?
Two examples of natural indicators of acids are red cabbage juice, which turns red in the presence of acids and green in the presence of bases, and litmus paper, which turns red in the presence of acids and blue in the presence of bases.
What turns red in the prescence of acid and blue in the prescence of alkali?
Litmus paper.
When do red and blue litmus paper tail to turn color?
Red litmus paper stays red in the presence of an acid and turns blue in the presence of a base. Blue litmus paper stays blue in the presence of a base and turns red in the presence of an acid.
What colors do litmus paper and phenolpthalein turn in presence of an acid or of base?
Litmus paper turns red in the presence of an acid and blue in the presence of a base. Phenolphthalein turns colorless in the presence of an acid and pink/purple in the presence of a base.
What color litmus paper measures acidity?
Red litmus paper turns blue in the presence of a base, while it stays red in the presence of an acid.
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.
What turns red in the presence of acid ad blue in the presence of alkali?
Litmus paper turns red in the presence of acid and blue in the presence of alkali.
What turns red in the presence of acid blue the presence of alkali?
Litmus Paper.
How can you test for an acid and an alkali?
You can test for an acid using litmus paper - it will turn red in the presence of an acid. To test for an alkali, you can use litmus paper as well - it will turn blue in the presence of an alkali. Additionally, you can test for an alkali using phenolphthalein indicator - it will turn pink in the presence of an alkali.
What are two examples of natural indicator of acid and bases?
Two examples of natural indicators of acids are red cabbage juice, which turns red in the presence of acids and green in the presence of bases, and litmus paper, which turns red in the presence of acids and blue in the presence of bases.
What color does blue litmus turn when exposed to an acid or base?
Blue litmus turns red in the presence of an acid and remains blue in the presence of a base.
How do YOU detect the presence of acid or alkali?
Acid can be detected using litmus paper which turns red when exposed to acids, while alkali turns it blue. Electronic pH meters can also be used to measure the acidity or alkalinity of a solution.
What is the test for an alkali?
One common test for an alkali is using red litmus paper - it will turn blue in the presence of an alkaline substance. Another test is using universal indicator paper, which will show a color change to indicate the presence of an alkali.
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 is the colour of litmus paper?
Red/blue red turns to blue to detect alkali blue turns to red to detect acid
Litmus paper turns what color in the presence of a base?
just saying that I'm 12 and i know the answer!an acid will turn red in litmus paper or a pinkcolour.if it is a week acid it will turn yellow or green. :)
What color does BTB turn when mixed with a acid or a base?
Bromothymol blue (BTB) turns yellow in the presence of an acid and blue in the presence of a base.
