Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic (i.e. alkaline) conditions with the color change occurring over the pH range 4.5-8.3 at 25 °C. Neutral litmus paper is purple in color.
The litmus paper will turn red.
Litmus paper is blue when dipped in an alkaline solution, and red when placed in an acidic solution. The colors begin to merge when you test pH neutral liquids.
Litmus paper turns blue in basic solution.
The solution is alkaline, because litmus paper remains blue in alkaline solutions and turns red in acidic solutions.
Red, it turns blue in base.
The litmus paper will turn red.
Red color in acidic solutions and blue color in basic solutions.
Litmus paper is blue when dipped in an alkaline solution, and red when placed in an acidic solution. The colors begin to merge when you test pH neutral liquids.
The litmus papers are used for checking the acidic and basic nature of any substance. That's why drop of lemon juice, which is by nature acidic, turns blue litmus into red(as the property of acidic solution is to change the color of blue litmus to red). So soap solution which is by nature basic will turn red litmus into blue (as the property of basic solution is to change the color of red litmus to blue).
pH paper changes color after being exposed to an acidic or a basic solution (depending on the paper). For instance, blue litmus paper will turn red after being exposed to an acidic solution, while red litmus paper will turn blue after being exposed to a basic solution. The addition of an acidic or basic solution to litmus paper causes a chemical reaction which changes the light absorbing properties of litmus, thus altering its color.
Red color in acidic solutions and blue color in basic solutions.
Litmus paper turns blue in basic solution.
The solution is alkaline, because litmus paper remains blue in alkaline solutions and turns red in acidic solutions.
just put a drop of solution on blue litmus paper. if litmus turn in to red color then solution is acid otherwise it is base .
to tell if a solution is acidic or basic (paper changes color when exposed to solutions)
Red, it turns blue in base.
Red, showing that the solution is acidic.