Litmus paper or litmus paper (in English: Litmus) is a red substance that is obtained from lichen and is used in chemical experiments and researches. It turns blue in the game environment and turns red in an acidic environment. It is also one of the identifiers of the environment and is used to identify acids and bases. Litmus paper is available in two colors, blue litmus and red litmus , blue li
Litmus paper or litmus paper (in English: Litmus) is a red substance that is obtained from lichen and is used in chemical experiments and researches. It turns blue in the game environment and turns red in an acidic environment. It is also one of the identifiers of the environment and is used to identify acids and bases. Litmus paper is available in two colors, blue litmus and red litmus , blue litmus is used for acidic environment .
They use red litmus for the game environment. Litmus blue paper turns red in an acidic environment and litmus red paper turns blue in a game environment . Litmus solution is red at pH less than 4.5, blue at pH above 8.3, and purple at pH 2, which is the neutral range for this indicator.
The oldest litmus was first used around 1300 AD by a Spanish alchemist named Arnaldus de Villa Nova. Litmus test is a test that is used to identify and distinguish acidic and basic substances.
Litmus paper does not show the pH of just one compound. It may even be possible for the tested compounds whose pH value is between 4.5 and 8.3 not to change color. It only indicates in a very basic fashion whether the compound is acidic or basic.
Litmus paper is used in many laboratories to measure pH as well as monitor and control it. The main use of these papers is to measure pH.
litmus paper usually has 4 different parts, each of these parts is sensitive to pH and turns a specific color in certain ranges of pH. As a result, by observing the set of these four colors, one can understand the pH of the environment in which the paper is placed, qualitatively and perhaps to some extent.
Litmus paper is available in blue and red litmus paper, blue litmus paper turns red in an acidic environment, and red litmus paper turns blue when in contact with an alkaline solution .
Litmus paper is used to determine whether a solution is basic or acidic.
The important thing is that litmus paper does not change color in neutral solutions, although some brands of litmus paper are made to turn purple in neutral environments.
Litmus paper may be moistened with distilled water to change color in the gaseous sample. After exposure to the entire surface, the gases cause the entire strip to change color. Neutral gases, such as oxygen and nitrogen, do not change the color of the pH paper.
It should be noted that litmus paper that has changed from red to blue can be reused as blue litmus paper . Papers that have changed from blue to red can be reused as red litmus paper .
The litmus test is quick and simple, but suffers from several limitations. First, it is not an accurate indicator for PH. It does not determine the pH value as a number.
Instead, it roughly indicates how acidic or basic the sample is. Second, it can change color for other reasons besides the acid-base reaction.
For example, blue litmus turns white in chlorine gas. This discoloration is due to loss of color due to hypochlorite ions, not acidity or alkalinity.
Using the litmus test is a quick and easy way to determine the acidity or alkalinity of a solution. Litmus paper is inexpensive, portable, and can test acidity and alkalinity using only a small amount of solution.
However, it cannot determine the actual pH for a substance and only indicates that the pH is approximately less than 5 or greater than 8. Litmus paper is not useful for testing substances with a pH close to neutral.
pH paper (PH paper), litmus paper and litmus paper are tools that are very useful in determining the pH of a solution or measuring the acidity or alkalinity of solutions. But a very common question is what is the difference between ph paper and litmus paper?
The basis of the work of all these papers, i.e. pH meter paper is the same as litmus paper or litmus paper, in the way that there is some identifying substance on the paper that reacts in alkaline and acidic environments and has an appearance change in color. As a result, the state of the solution can be recognized by the color change.
There are two types of litmus paper: blue and red litmus paper , blue litmus paper turns red in an acidic environment , and red litmus paper turns blue in contact with an alkaline solution . This widely used paper is used to determine whether a solution is basic or acidic.
The important thing is that litmus paper does not change color in neutral solutions, although some brands of litmus paper are made to turn purple in neutral environments.
On the other hand, ph paper has a color change spectrum in different colors that also show the degree of acidity or alkalinity of a solution, and there is usually a guide table with a pH meter paper that shows each color It shows what degree of PH and in fact each ph number has its own color.
Therefore, as mentioned in the article above, it can be concluded that the main difference between ph paper and litmus paper is that litmus or litmus paper will only show the acidity or alkalinity of a solution, but PH paper can It also shows the acidity or alkalinity of the solution and which solution is acidic.
