Blue litmus will not change its color in bases or alkaline solutions.
Blue litmus turns red in acid. Sodium carbonate solution is alkaline (basic), so nothing will happen when blue litmus is put into this. Red litmus will turn blue if added to sodium carbonate.
yes a blue litmus paper turns red when put into an acid
When a blue litmus paper are put in a solution of baking soda and the conditions are under the basic ph level, it will turn into red. And if a red litmus paper is put under acidic conditions, it will turn into blue.
Red litmus paper will turn blue in the presence of a base. Toothpaste is a base, so the litmus paper would turn blue.
Blue litmus paper would turn red in ferric chloride solution due to the acidic nature of the solution, which would cause a change in the pH of the litmus paper turning it to red.
Well if you place blue litmus paper in saliva and it turns red, then the saliva is acidic. If you put red litmus in the saliva and it turns blue, then the saliva is alkaline. However, if the red litmus doesn't change colour and the blue litmus doesn't change colour, the saliva would be neutral.
Wet blue litmus become red in acidic solutions.
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).
"Soap" is a little vague, but most soaps are somewhat alkaline and if I were forced to bet on what would happen I would guess that the litmus would turn blue again. However, depending on the kind of soap, it might do nothing except get it wet and soapy.
Yes, sea water would change color with red litmus paper because sea water is basic. Under basic, or alkaline, conditions, red litmus paper turns blue. Being between the pH range of 7.5 and 8.4 (between 7 and 14 marks basic conditions), sea water is basic and, therefore, the red litmus paper will change color.
Well if you place blue litmus paper in saliva and it turns red, then the saliva is acidic. If you put red litmus in the saliva and it turns blue, then the saliva is alkaline. However, if the red litmus doesn't change colour and the blue litmus doesn't change colour, the saliva would be neutral.
It will generally turn the litmus paper red.