This color depends on the pH of the solution.
in neutral solutions ph paper turns to blue!
A moist litmus paper does not change its colour in neutral solutions.
Red litmus paper will stay red in the presence of an ester. Litmus paper changes color in acidic or basic solutions, not in the presence of esters.
Litmus paper does not change color in sugar solutions because sugar is a neutral substance and does not affect the pH of the solution. Litmus paper is used to test for acidity or alkalinity, turning red in acidic solutions and blue in alkaline solutions. Since sugar does not alter the pH, litmus paper will remain its original color when immersed in a sugar solution.
if you are working with a strong acid the lithmus paper will turn red.
it turns blue litmus paper red
Red color in acidic solutions and blue color in basic solutions.
The paper turn to a blue color.
Green
BLUE
Blue litmus paper will turn to red because hydrochloric is an acid. In aqueous solutions,acid change blue litmus paper to red. In aqueous solutions,base change red litmus paper to blue.
Blue. This answer assumes that you are referring to litmus paper.