what is the effect of phenolphthalein and blue litmus on sodium chloride,hydrochloric acid,potassium hydroxide?

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Solution

1. Phenolphthalein changes from colourless to pink in Potassium Hydroxide as it is a base. It shown no change under acidic conditions.

2. Blue litmus changes to red in Hydrochloric acid. It shows no change in basic conditions.

3. Both the indicators do not show any change in Sodium Chloride as it is neutral.

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Similar questions

Four students A, B, C and D were studying the effect of the solutions of hydrochloric acid, sodium hydroxide, sodium chloride and pure water respectively on blue litmus solution. Which of the students observed the colour change of blue litmus solution to red?
(1) A
(2) B
(3) C
(4) D

A Drop of colourless liquid was placed on blue litmus paper. The litmus paper turned red. The liquid could be :
(1) dilute hydrochloric acid
(2) dilute sodium hydroxide solution
(3) distilled water
(4) sodium bicarbonate solution

Indicator litmus test on diluted hydrochloric acid, diluted sodium hydroxide, diluted nitric acid can you show the effect of litmus paper, effect on turmeric paper, effect on China rose

Identify the odd one out and justify.

(a) Chloride, nitrate, hydride, ammonium

(b) Hydrogen chloride, sodium hydroxide, calcium oxide, ammonia

(d) Ammonium chloride, sodium chloride, potassium nitrate, sodium sulphate

(e) Sodium nitrate, sodium carbonate, sodium sulphate, sodium chloride

(f) Calcium oxide, magnesium oxide, zinc oxide, sodium oxide.

(g) Crystalline blue vitriol, crystalline common salt, crystalline ferrous sulphate, crystalline sodium carbonate.

(h) Sodium chloride, potassium hydroxide, acetic acid, sodium acetate.

a) What is universal indicator .

b) What is the chemical equation involved in the preparation of sodium hydroxide. Name the process.

c) Give reason for; Dry hydrogen chloride gas does not turn blue litmus red whereas dilute hydrochloric.

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