Question

Sodium hydroxide turns phenolphthalein solution
(a) pink
(b) yellow
(c) colourless
(d) orange​

Answer 1

Answer:

Sodium hydroxide turns phenolphthalein solution  (a) pink.

Explanation:

phenolphthalein is an colourless indicator which is colourless in acidic medium but turns pink in alkaline medium. Since NaOH is a basic substance, it turns phenolphthalein pink.

Answer 2

(a) pink is the right answer.

Explanation:

• When some drops of phenolphthalein indicator are delivered to sodium hydroxide solution, the answer turns deep pink.
• Phenolphthalein indicator suggests pink color in a simple solution.
• Phenolphthalein is frequently used as an indicator in acid-base titrations.
• For this application, it turns colorless in acidic answers and pink in simple answers.
• Phenolphthalein is barely soluble in water and normally is dissolved in alcohols to be used in experiments.
• It is a susceptible acid, that could lose H+ ions withinside the solution.
• Further lack of proton in better pH takes place slowly and ends in a colorless form.

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