blue
Litmus paper turns blue in a base.
the red litmus paper turns to blue
Blue litmus paper turns red in a base.
If you are using red litmus paper, a base will turn the litmus paper blue.
Blue
It turns blue because it's a base. If it was a acid then it will turn red.
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.
A blue color
Blue. It also depends on the pH of the base, but it is generally blue.
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.
Litmus paper indicates a base by changing color when it comes into contact with a basic solution. Specifically, blue litmus paper remains blue or may intensify in color, while red litmus paper turns blue. This color change occurs because the pH of a basic solution is above 7, which causes the chemical indicators in the litmus paper to react accordingly. Thus, blue litmus paper is a visual cue for the presence of a base.
When a base is added to red litmus paper, the indicator turns blue. This is because red litmus paper is used to indicate acidic conditions, so a base would cause the paper to change color to blue.