Question

a reagent bottle (labelled) is filled with HCL solution and the other (labelled as b) is filled with water. both liquids in the bottle are colourless. what method do you recommend to identify the acid and water?

Answer 1

Answer:

There are several methods - look at the explanation.

Explanation:

So first you can use cobal chloride paper which turns from blue to pink when water is present or you can use anhydrous copper sulfate which turns from white to blue and the blue substance would be called hydrated copper sulfate which is formed when water and anhydrous copper sulfate mix.

Answer 2

Simplest method to identify acid is by using a litmus paper.

What is litmus paper?

• Litmus paper is a filter paper that has been treated with a lichen-provided natural-soluble dye.
• It is a piece of paper that produces a result which can be used as a pH indicator.

How litmus paper works?

• Litmus papers are used to determine the acidity or alkalinity of a substance.
• Blue litmus paper turns red when brought in contact with acids and red litmus turns blue in contact with base and remains as it is around neutral pH(like when in contact with water).

How to differentiate between acid and water bottle?

• Take a blue litmus paper and dip it into both bottles and see the results.
• If it turns red then the bottle contains acid or if it remains unchanged then the bottle is of water.
• Thus, Simplest method to identify acid is by using a litmus paper..

Learn more about litmus paper here..

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