Blue!! Because pool water is alkaline and alkalis turn red litmus paper into blue.
THE COLOUR of the litmus paper will not change as a salt solution is neutral
There are different types of Litmus paper and so the exact color may differ for each of these types. Also, water itself is neutral when pure but most tap water is slightly basic so it depends on what you use. -- Tap water will not cause any colour change when tested with litmus paper. Blue litmus paper remains blue, the same goes for red litmus paper. Although the above statement says that tap water is slightly basic, the pH is still close to neutral and will not be significant enough to cause a colour change for the litmus paper.
Purple litmus paper will remain purple when dipped in tap water. Tap water is typically neutral or slightly basic, so it will not cause a color change in purple litmus paper.
The green color on litmus paper with tap water typically indicates a neutral pH level. The tap water may have a pH close to 7, resulting in the green color change. This means the water is neither acidic nor basic.
In acid solution, blue colour of litmus is changed into red. In basic sol litmus change to blue.
The colour remain unchanged.
baking powder will not show any colour change in litmus soltion because water is absent but wen it is mixed wid water and then subjected to the litmus solution, the red litmus wud change to blue.
Dry HCl gas does not change the color of litmus paper because it does not contain any water molecules to dissociate into H+ ions, which are responsible for the acidic properties that change the color of the litmus paper. Dry HCl gas does not produce any H+ ions when it comes in contact with water-free litmus paper, so there is no color change observed.
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.
water
The paper changes colour from red to blue. This is because when you mix MgO with water, you now have Mg(OH)2 solution which is basic and hence changes the colour of red litmus paper to blue.
Litmus paper is a sort of dark mauve colour in neutral substances like water. It was traditionally described as 'claret', though I never thought it looked like the claret I drank.