iodine
the red litmus paper turns to blue
I believe, that acid makes blue litmus paper turn red.
Because if you only use red litmus paper and the solution you tested kept the paper red, you would think that the solution would also make the blue litmus paper turn red too. But what if the solution was neutral? Then the blue litmus paper would stayblue instead of turn red. Thats why you need to use both blue and red litmus paper.
A basic pH will make litmus paper go blue. The intensity is from below seven to 14 that varies from green to a deep blue.
Litmus paper turns red if the solution is acidic and blue if the solution is basic. Vinegar is an acidic solution (due to acetic acid), and will turn the litmus paper red.
Litmus paper is reactive to acids and bases. Acids make the paper turn red; bases make it turn blue.
When red litmus paper is dipped in distilled water, it will remain red, indicating that the water is neutral and does not change the acidity. Similarly, when blue litmus paper is dipped in the same distilled water, it will also remain blue. This observation confirms that distilled water has a neutral pH of around 7, which does not affect the litmus papers' color.
Litmus paper is primarily made out of paper. The paper is mostly made up of wood cellulose, which is treated with solvents beforehand to make sure there are no contaminants. Litmus paper is infused with lichens. Lichens are considered to be both an algae and a fungus, and they're quite sensitive to environmental change, which gives litmus paper its color changing ability.The two most common lichens found in litmus paper are rocella tinctoria and lecanora tartarea.- eHow.com/jseger29@yahoo.com
A litmus paper is used to test the alkalinity or acidity of any substance. In the presence of an acid, a blue litmus paper will turn red and a red litmus paper turns blue to indicate the presence of alkaline.
No, it does not.
Bases and alkali's turn litmus paper purple.
Handle the litmus paper with clean and dry hands to avoid contamination. Avoid touching the test area of the litmus paper with your fingers to prevent inaccurate results. Make sure the litmus paper is not expired or damaged, as this can affect the accuracy of the test. Dispose of used litmus paper properly according to safety guidelines.