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When phenolphthalein comes into contact with a basic solution, it turns pink-ish, or as you see it, fuchsia. When sodium and water react, the result is NaOH. Given that the presence of OH ions is, in essence, what makes a solution basic, it goes without saying that a solution of the three would be pink/fuchsia.
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Why does sodium hydroxide and phenolphthalein mixture turn clear when carbon dioxide is added?
Carbon dioxide dissolves in the aqueous solution to produce carbonic acid. The carbonic acid dissociates to produce the carbonate ion and two protons. The protons reacts with the hydroxide provided by the already dissociated sodium hydroxide to produce water. The sodium carbonate is fairly soluble and stays in solution. Since the hydroxide ion is depleted, the phenolphthalein reverts from pink to clear as it does in solutions with a pH less than 8.3.
What colour appear when lime water plus phenolphthalein?
When lime water (a solution of calcium hydroxide) is mixed with phenolphthalein, the solution turns pink. This occurs because phenolphthalein is a pH indicator that changes color in basic solutions. Lime water is alkaline, so it causes the phenolphthalein to shift from colorless to pink in the presence of a base.
Is sodium hydroxide a base or acid how will you justify?
Sodium hydroxide is a strong base. This can be justified by the fact that when it dissociates in water, it releases hydroxide ions (OH-) which can accept protons (H+) and increase the pH of the solution.
What is the colour of phenolphthalein in salt water?
It will turn purple
What happens when water is added to phenolphthalein?
When water is added to phenolphthalein, the color remains the same, which is colorless. Phenolphthalein is typically used as an indicator in titrations with strong acid and strong base where the color change is triggered by changes in pH, not by the addition of water.
When a drop of phenolphthalein is introduced in lime water the solution turns?
When a drop of phenolphthalein is introduced in lime water the solution turns pink in colour.
When phenolphthalein is added to ammonium hydroxide is the color of the final solution is pink?
Phenolphthalein is an indicator often used in chemical titrations. Phenolphthalein is colorless in acidic solutions and turns pink in basic solutions. The more basic the solution the pinker the solution will become when Phenolphthalein is present.
What is the color of lime water when phenolphthalein is added into lime water?
The color is pink with phenolphthalein.
How does phenolphthalein show carbon dioxide?
The solution of carbon dioxide in water is colorless.
How do you make 1 solution phenolphthalein?
To make a 1% solution of phenolphthalein, you would typically dissolve 1g of phenolphthalein in 100mL of a suitable solvent, such as ethanol or water. Mix well until the phenolphthalein is fully dissolved to obtain the desired concentration.
How do you make up a solution of phenolphthalein from a whit solid of phenolphthalein?
Dissolve 0.1g of the powder in ethanol and dilute with distilled water upto 100 cm3
When sodium chloride is dissolved in water the solution is homogeneous?
The sodium chloride solution of sodium chloride in water is homogeneous.
