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Blue litmus paper turns red in an acid and remains blue in a base such as sodium hydroxide. Red litmus paper would turn blue in the base sodium hydroxide.

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Colour of sodium hydroxide of litmus?

Sodium hydroxide turns red litmus paper blue.


What color does blue litmus paper turn with Sodium hydroxide?

NOTHING! Sodium hydroxide (NaOH) is a base, and BLP does not change color with a base.


Why does red litmus paper turn blue in sodium hydroxide if it is acid'?

Red litmus paper turns blue in sodium hydroxide because the red litmus paper is indicating the presence of acidity. When it comes into contact with sodium hydroxide, a strong base, the base neutralizes the acid on the litmus paper, causing the color change to blue.


What will happen if a drop of Sodium Hydroxide is added to Blue Litmus Paper?

When a drop of sodium hydroxide (NaOH) is added to blue litmus paper, there will be no color change, as blue litmus paper is already indicative of a basic (alkaline) environment. Sodium hydroxide is a strong base, and blue litmus paper remains blue in the presence of bases. In contrast, if red litmus paper were used, it would turn blue, indicating the presence of a base.


What is the action of sodium hydroxide on the colour of red litmus?

Sodium hydroxide is a strong base and will turn red litmus paper blue. This color change occurs due to the high concentration of hydroxide ions present in the sodium hydroxide solution, which react with the indicator dye in the litmus paper, causing the color change.


What effects does calcium hydroxide has on red and blue litmus paper?

calcium hydroxide turn red litmus paper into blue because it is a base. it does not have any effect on blue litmus paper.


What happened to the blue litmus paper when sodium hydroxide was added?

acids turn blue litmus peeper to red


Does sodium hydroxide turn litmus solution purple?

yes, it turns in purple or a very light pink-ish purple color


How to distinguish sodium hydroxide solution and ammonium hydroxide solution by a chemical test?

One way to distinguish between sodium hydroxide and ammonium hydroxide solutions is to use a specific indicator solution such as red litmus paper. When sodium hydroxide solution is added to red litmus paper, it will turn blue, indicating it is a base. Ammonium hydroxide solution, on the other hand, does not affect red litmus paper, indicating that it is a weak base.


What happens when magnesuim hydroxide is added to litmus paper?

When magnesium hydroxide is added to litmus paper, the litmus paper will turn blue. This is because magnesium hydroxide is a base and has a pH greater than 7. Litmus paper is an indicator that changes color in response to the acidity or alkalinity of a solution.


What color does blue litmus paper turn with calcium hydroxide?

Calcium hydroxide is basic and hence the litmus will remain blue.


What is a corrosive substance that will turn litmus blue?

A corrosive substance that will turn litmus blue is a strong base, like sodium hydroxide or potassium hydroxide. These substances are alkaline and will change the color of litmus paper from red to blue when they come in contact with it.