For example methyl orange become red in acidic solutions.
Litmus paper is blue when dipped in an alkaline solution, and red when placed in an acidic solution. The colors begin to merge when you test pH neutral liquids.
A strip of litmus paper will turn red in an acidic solution.
Red litmus solution would turn blue if dipped in phosphoric acid, because phosphoric acid is acidic and will cause the litmus paper to change color from red to blue.
Litmus paper would turn blue when dipped in an aqueous solution of aspirin, indicating the solution is basic. aspirin is a weak acid and when dissolved in water, it undergoes hydrolysis releasing hydroxide ions which makes the solution basic.
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 blue litmus paper is dipped in a soap solution, it is likely to turn red. This change in color indicates that the soap solution is likely acidic in nature.
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.
Red, because litmus paper remains blue in alkaline solutions and turns red in acidic solutions.
A green-y yellow.
The solution is alkaline, because litmus paper remains blue in alkaline solutions and turns red in acidic solutions.
It turns red because rainwater is slightly acidic and litmus turns red in the presence of acids
Blue litmus paper turns red in an acidic solution.