The paper should turn Purple, since it will attempt to be both red and blue simultaneously.
At PH7 both red and blue litmus retain their original colors.
I think it is supposed to be PURPLE. Because of the following:It turns red when placed in acidic solutionIt turns blue when placed in alkaline solutionAnd purple when placed in neutral.
As Lemon Juice is an Acid, the colour of the Red Litmus Paper will stay the same.
will turn red litmus blue,
Red
Litmus turns red in sulfuric acid.
Litmus paper turns red in acidic solutions.
red
blue litmus paper turns to red when its in contact with acid
litmus paper turns blue litmus red when tested on an acid and red litmus blue when tested on a base
The colour is red in acidic solutions.
it turns blue litmus paper red
Well if you place blue litmus paper in saliva and it turns red, then the saliva is acidic. If you put red litmus in the saliva and it turns blue, then the saliva is alkaline. However, if the red litmus doesn't change colour and the blue litmus doesn't change colour, the saliva would be neutral.