Red color in acidic solutions and blue color in basic solutions.
Acid turns litmus paper red.
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
an acid turns the litmus paper red.
When an acid touches Litmus paper it turns red (pink).
A base turn the color of the paper in blue.
When pH paper is dipped into an acid, it changes color depending on the acidity of the solution. The paper turns a certain color (usually red) to indicate that the solution is acidic. The intensity of the color change corresponds to the pH level of the acid.
Litmus paper is basically used to test nature of solution i.e acid or alkaline. For acid blue litmus turns to red. But for alkaline red litmus turns to blue color.
Just to remember:Lithmus color in:aciD turns reDand in:Base turns Blue
An acid turns blue litmus paper red. This is because the acid donates a proton (H+) to the water in the litmus paper, changing the pH and causing the litmus paper to change color.
Litmus paper usually turns either blue or pink (sometimes red) which indicates whether the chemical is an acid or a base. If the paper turns blue it is a base. If pink or red it is an acid.
Nitric acid turns blue litmus paper red.
Blue litmus paper turns red in acid red litmus paper turns blue in alkali.