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Litmus paper turn to red color.
The paper turn on blue.
Because the pH of the juice is changed.
it can turn red pH paper blue and blue pH paper red
Red color in acidic solutions and blue color in basic solutions.
Litmus paper turn to red color.
blue
Mauve on the pH paper Merck art. 9565.
Red, due to the citric acid.
Blue litmus paper would turn red in orange juice.
Apple juice is a type of citric acid so it would turn blue litmus paper redish.
Red, showing that the solution is acidic.
It would remain red, red litmus paper only reacts to blue in the presence of a base. Lemon juice is acidic and thus wouldn't turn the paper a color. If blue litmus paper was used in the lemon juice it would turn red. Consequently dipping blue litmus paper in a base won't change the color because it does not react with bases, only acids.
it turns acidic or very basic
The paper turn on blue.
The paper turn to a blue color.
at first it will turn purple then it will turn pink