The red litmus paper turns green because the acid (represented by red) and the base ( represented most commonly by blue) mix their Ph and become a nuetral. In short, red litmus paper in a base turns green.
dark green
Red color in acidic solutions and blue color in basic solutions.
Red litmus paper is used to test for acids. If the red litmus paper turns blue when dipped in a substance, it indicates the presence of an acid.
Litmus paper dipped in coke will turn red, indicating that the solution is acidic. This change in color occurs because coke is a carbonated beverage containing phosphoric acid and citric acid.
The answer isn't so simple. There are various kinds of pH paper. However, I presume you are referring to litmus paper which is the widest distributed form. Acetic acid has no effeect on red litmus paper but turns blue litmus red
Blue litmus paper will turn red when dipped in dilute nitric acid. This color change indicates that the solution is acidic. Nitric acid is a strong acid and will donate protons to the litmus paper, causing the color change.
orange
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Blue litmus paper will likely remain blue when dipped in spinach as spinach is not acidic enough to cause a color change to red.
Blue litmus paper turns RED in an acid. Red litmus paper turns BLUE in a base.
blue
When a strip of litmus paper is dipped into an acidic solution, it turns red. This is because litmus paper changes color in response to the pH of the solution it comes into contact with. In acidic solutions, the paper turns red, indicating low pH.
If rainwater is dipped into a blue litmus paper, there will likely be no color change. Blue litmus paper turns red in the presence of an acid, but rainwater is typically slightly acidic due to dissolved carbon dioxide, which is not strong enough to turn blue litmus red.
It stays blue.
blue litmus remains blue while red litmus changes to blue
dark green
blue