im pretty sure grapefruit is an acid, so it would turn litmus paper red.
the red litmus paper turns to blue
Ammonia turns red litmus paper blue, but does not have any effect on blue litmus parer, since it is a base.
Acid turns blue litmus red and maintains red litmus at the same color.
Litmus paper would turn red if apricot juice, which is acidic, was dropped on it. This is because litmus paper turns red in the presence of an acid.
Red color in acidic solutions and blue color in basic solutions.
Blue litmus paper turns red in acid red litmus paper turns blue in alkali.
If it is blue litmus paper ,then it turns red. But if its red litmus paper, it doesn't change color.
Acid turns litmus paper red.
Litmus paper turns blue in a base.
Hydrogen chloride turns damp blue litmus paper red.
Litmus paper turns blue in basic solution.
an acid turns the litmus paper red.
Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic (i.e. alkaline) conditions with the color change occurring over the pH range 4.5-8.3 at 25 °C. Neutral litmus paper is purple in color.
the red litmus paper turns to blue
Blue
A Blue litmus paper turns red in acid and stays blue in alkalin A red litmus paper turns blue in alkaline and stays red in acid
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.