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There are a couple of different things this could mean. I'll try to address them all.
Litmus paper is a strip of blotting paper soaked in a solution of an indicator called litmus. Litmus turns blue in the presense of basic solutions, and red in the presence of acidic solutions.
If you use a strip of litmus paper to check on the acidity (or alkalinity) of a solution, it may change color. This color will probably slowly fade over time as the litmus reacts with acids or bases in the air, such as vinegar fumes or ammonia, until it reaches the sort of grayish state of neutral litmus. Exposing it to another acid or alkali should bring the color back.
Also, if you immerse a strip of litmus paper in a solution, some of the litmus in the paper may leach out. This isn't likely to cause a dramatic fading, but it could be noticeable over time, especially if you keep using a single strip of litmus paper and rinsing it after each use.
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∙ 10y ago
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How can litmus paper be used?
Litmus paper is simply used to check for acidity. It is not quantitative, only qualitative. That is, its use will not identify an exact pH, but its use can identify if the substance being checked is acidic or not.
What are litmus paper?
Litmus is a natural dye indicator extracted from lichens.They react with acid (blue litmus turns red)& bases(red litmus turns blue) .Paper made with litmus dye indicators are called litmus paper and used in chemical laboratories.
What substance in litmus paper helps in its change?
It depends. Litmus paper is used to test pH levels. Blue litmus paper turns red in the presence of acids, and red litmus paper turns blue in the presence of alkalines. Litmus paper is purple in neutral conditions.
What are the most common liquid or paper indicators used in chemistry?
Litmus paper, Turmeric paper Methyl orange, Phenolphtalein,
Does a base turn blue litmus paper blue?
yes a blue litmus paper turns red when put into an acid
What color litmus paper is used to test acids?
Litmus paper.
Why is litmus used as an indicator?
Litmus paper can be used to determine if a solution is acidic or basic
What uses are there for litmus paper?
The litmus paper is used to evaluate the pH of a solution.
How can litmus paper be used?
Litmus paper is simply used to check for acidity. It is not quantitative, only qualitative. That is, its use will not identify an exact pH, but its use can identify if the substance being checked is acidic or not.
What is a litmus paper and how to use it?
A litmus paper is a indicator that is used to test for acids or bases
Why do you need to test solutions with Blue litmus paper and red litmus paper?
So you can tell if the solution is an acid or a base
What does a base do to red litmus paper?
Red litmus paper is used to check for basicity. It turns blue when exposed to bases. Blue litmus paper is used to check for acidity. It turns red when exposed to acids.
What are litmus paper?
Litmus is a natural dye indicator extracted from lichens.They react with acid (blue litmus turns red)& bases(red litmus turns blue) .Paper made with litmus dye indicators are called litmus paper and used in chemical laboratories.
What substance in litmus paper helps in its change?
It depends. Litmus paper is used to test pH levels. Blue litmus paper turns red in the presence of acids, and red litmus paper turns blue in the presence of alkalines. Litmus paper is purple in neutral conditions.
What is the use of a litmus paper?
litmus paper is genrally used to verify whether a substance is acid or base
What are the most common liquid or paper indicators used in chemistry?
Litmus paper, Turmeric paper Methyl orange, Phenolphtalein,
Does a base turn blue litmus paper blue?
yes a blue litmus paper turns red when put into an acid
