Litmus paper turns..................when we add (NaOH) sodium hydroxide

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Litmus paper turns blue when we add (NaOH).Why because NaOH is a base and it will turn red litmus to blue in colour.

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Red to blue colour

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Ofcourse blue because this is a base

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as it is base...

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Naoh is alkaline and litmus paper turns blue in alkaline solution. ther for answer is blue

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blue

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Blue - Base. So, Blue is the right answer!!!!!

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Red litmus paper turns blue when we dip it in sodium hydroxide (NaOH) due to its basic nature.

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Blue.

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blue

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Litmus Paper turns blue when we add sodium hydroxide (NAOH) ...

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blue for base.. bb

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blue right

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red

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red to blue

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blue

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blue...

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hi to all

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Introduction:
Litmus paper is a simple and commonly used pH indicator that changes color in the presence of an acid or a base. It is made from a natural dye extracted from lichens, which contains a mixture of different pigments. When litmus paper is exposed to an acid or a base, the pigments in the paper undergo a chemical reaction that results in a color change. In this case, when sodium hydroxide (NaOH) is added to litmus paper, it turns...

The Effect of Sodium Hydroxide (NaOH) on Litmus Paper:
When sodium hydroxide (NaOH) is added to litmus paper, it turns blue.

Explanation:
1. Litmus Paper and pH:
Litmus paper is an example of a natural pH indicator. It changes color in response to the pH of a solution. pH is a measure of the acidity or alkalinity of a substance, and it is determined by the concentration of hydrogen ions (H+) in the solution. Acidic solutions have a high concentration of H+ ions, while alkaline (basic) solutions have a low concentration of H+ ions.

2. Sodium Hydroxide (NaOH):
Sodium hydroxide, commonly known as caustic soda or lye, is a strong base. It dissociates in water to produce hydroxide ions (OH-). These hydroxide ions can react with the hydrogen ions (H+) present in acidic solutions, resulting in the formation of water (H2O). This reaction is known as neutralization.

3. Reaction with Litmus Paper:
When sodium hydroxide (NaOH) is added to litmus paper, the hydroxide ions (OH-) present in the sodium hydroxide solution react with the hydrogen ions (H+) present in the litmus paper. This reaction causes the litmus paper to undergo a chemical change.

4. Color Change:
The pigments in litmus paper are sensitive to changes in pH. In the presence of an alkaline solution like sodium hydroxide, the pigments in the litmus paper are converted to a blue form. This blue color indicates that the litmus paper has been exposed to a base.

5. Indicator Range:
Litmus paper is considered a broad-range indicator because it can detect both acidic and basic solutions. In the presence of an acid, litmus paper turns red, while in the presence of a base like sodium hydroxide, it turns blue. However, it is important to note that litmus paper does not provide a precise measurement of pH, but rather a qualitative indication of acidity or alkalinity.

Conclusion:
When sodium hydroxide (NaOH) is added to litmus paper, it turns blue. This color change occurs due to a chemical reaction between the hydroxide ions (OH-) in sodium hydroxide and the pigments in the litmus paper. Litmus paper is a useful tool for quickly determining whether a solution is acidic or basic.

Answer

What is the uses of  sodium hydroxide

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