A student prepared solutions of $(i)$ an acid $(ii)$ a base in two separate beakers. She forgot to label the solutions and litmus paper is not available in the laboratory. Since both the solutions are colourless how will she distinguish between the two?

Open in App

Solution

The student can use indicators like phenolphthalein and turmeric to distinguish between acid and base.

$∙$ Phenolphthalein turns colourless in acidic solutions and pink in basic solutions.

$∙$ Turmeric shows no colour change in acids but turns red in basic solutions.

Suggest Corrections

Similar questions

A student perpared solution of a acids and a base in two separate breakers she forgot to label the solution and litmus paper is not available in the lab , since both the solution are colours less how will she distinguish the two

A student prepared 20% sodium hydroxide solution in a beaker to study saponification reaction. Some observations related to this are given below:

(I) Sodium hydroxide solution turns red litmus blue
(II) Sodium hydroxide readily dissolves in water
(III) The beaker containing solution appears cold when touched from outside
(IV) The blue litmus paper turns red when dipped into the solution

The correct observations are :

Q. Smita carried out some experiments with china rose petals. She placed china rose petals in a beaker and added some hotwater. She divided this solution into three test tubes and added acid to one, base to another and left the third one as such. But she forgot to label these test tubes. Identify the correct match for the solution in each test tube.

A student prepared $20 %$ sodium hydroxide solution in a beaker containing water. The observations noted by him are given below

(I) Sodium hydroxide is in the form of pellets.

(II) It dissolves in water readily.

(III) The beaker appears cold when touched from outside.

(iv) The red litmus paper turns blue when dipped into the solution

Q. Student paper 2 solutions, a solution of alum and a solution of fine sand in water . Distinguish between the two on the basis of transparency and stability.

Join BYJU'S Learning Program

Explore more

Effect on Indicators by Acids and Bases

Standard X Chemistry

Join BYJU'S Learning Program

A student prepared solutions of (i) an acid (ii) a base in two separate beakers. She forgot to label the solutions and litmus paper is not available in the laboratory. Since both the solutions are colourless how will she distinguish between the two?​

The student can use indicators like phenolphthalein and turmeric to distinguish between acid and base. ∙ Phenolphthalein turns colourless in acidic solutions and pink in basic solutions. ∙ Turmeric shows no colour change in acids but turns red in basic solutions. ​

A student prepared solutions of $(i)$ an acid $(ii)$ a base in two separate beakers. She forgot to label the solutions and litmus paper is not available in the laboratory. Since both the solutions are colourless how will she distinguish between the two?

The student can use indicators like phenolphthalein and turmeric to distinguish between acid and base.

$∙$ Phenolphthalein turns colourless in acidic solutions and pink in basic solutions.

$∙$ Turmeric shows no colour change in acids but turns red in basic solutions.