Red litmus paper remains red when dipped into an acid.
Blue litmus paper will turn red in an acid.
Similarly, Blue litmus remains blue in a base.
Red litmus turns blue in a base.
Acid: Red litmus
I believe, that acid makes blue litmus paper turn red.
When an acid touches Litmus paper it turns red (pink).
The color of litmus paper in acidic solutions is red.
red
No an acid will only change the litmus paper red regardless of of the substance color.
It will turn red.
HCl (hydrochloric acid) is an acid so it will turn litmus paper red. and alkali will go from red litmus to blue.
Nothing, red litmus paper changes in the presence of an acid not a base, blue litmus paper turns red with nitric acid
Blue litmus paper would be used and if the chemical is an acid the litmus paper would turn red.
Red, due to the citric acid.
Way back when I was in high school (3000 BC) acid turned litmus paper pink and a base turned it blue.