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The first litmus papers were white. Now we got in red and blue. They are more reliable. In blue litmus, an alkali solution stays blue. If it turns red, that means you have an acidic solution.

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If red litmus is added to a alkali?

When red litmus is added to an alkali, its colour changes to blue. This is because an alkali is a base and has the property of turning red litmus paper or red litmus solution to blue.


What colour does litmus go in an alkali?

Color of litmus will change.Red litmus will change into blue.


How does the color change when a strong acid is added an alkali to neutralise?

The color does not change unless an indicator such as litmus or phenolphthalein is being used. If litmus the color change is blue to red If phenolphthalein the change is red to colorless


What substance is like litmus that will change color in acids acids alkali?

This substance is called a pH indicator.


What color does litmus paper change when added to HCL and methyl benzene?

Litmus paper will turn red in the presence of HCl, indicating acidity. However, it will not show any significant color change when added to methyl benzene, as it is a nonpolar solvent and does not react with litmus paper to cause a color change.


What colour does acid change to when red litmus paper is added?

the same color red


What happens to acid alkali and neutral substances when mixed with litmus?

The colors of litmus is different; this depends on the pH.


What effect do alkalis hava on litmus solution?

If the solution contains acid, then the alkali turns the litmus to its original colour(blue).The color is effected by the concentration of the acid and the alkali.


Why a dry blue litmus paper is not affected by hydrogen chloride gas?

Dry blue litmus paper does not change color in the presence of hydrogen chloride gas because it is already in its acidic form. Hydrongen chloride is an acidic gas that does not cause a reaction with blue litmus paper. The blue color of the litmus paper is retained because there is no alkali to neutralize in order to cause a color change.


What colour does alkali turn in litmas paper?

Alkalis turn litmus paper blue. Litmus paper is used as an indicator to determine whether a substance is acidic or alkaline based on the color change it undergoes.


What color would the litmus paper turn if it was blue?

Blue litmus paper turns red in acid red litmus paper turns blue in alkali.


When red litmus paper is dipped into alkalis what color does it turn to?

Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic (i.e. alkaline) conditions,the color change occurring over the pH range 4.5-8.3 (at 25°C). Neutral litmus paper is purple in color.