What color does litmus paper change if base or acid?
When litmus paper touches an acid, the paper changes to red. When it touches a base, the paper changes to blue. By comparing the color the litmus paper changed to by a chart, you could determine how strong or weak that acid or base is.
It is because the red litmus paper only changes its color (from red to blue) when exposed to any basic substance. Hydrochloric acid is acidic, thus there is no change in the color of the red litmus paper, although the acid would change the color of the blue litmus paper (pH paper that tests for acidity; changes from blue to red in the presence of acid)
Because the cemicals such as litmus has a special acid in it that makes it change color to the level of pH i s in the substance Booboo Because the chemical litmus makes the pH paper change color according to the pH in the substance. the main reason for the change in color of pH paper is the presence of chemical known as flevin.
litmus paper is an indicator which contains a chemical. this chemical breaks down when t comes into contact with an acid or alkali. this results in a color change.. the regular litmus which is usually 2 colors change accordingly: red litmus + acid = blue litmus blue litmus + alkali = red litmus note: using moist litmus paper ensures more accurate results : ) hope this info was useful : ) <3 melody : )