Acids will turn (blue) litmus into red:
Remember:
with litmus
aciD > reD
and
Base > Blue
Blue litmus is turned red by an acidic solution
Blue litmus become red in acidic solutions.
Blue
turns blue
blue litmus paper turns to red when its in contact with acid
Acids turns Blue litmus to Red. Bases turns Red litmus to Blue.
It will generally turn the litmus paper red.
the red litmus paper turns blue and the blue litmus paper remains blue indicating that the mixture is acidic>
If it is blue litmus paper ,then it turns red. But if its red litmus paper, it doesn't change color.
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.
There is no change, blue litmus stays blue and red litmus stays red.
Acid turns blue litmus red and maintains red litmus at the same color.