Question

you are provided with liquids ABC one contains in another contains HCL and third is sugar solution you are given an phenopthelin solution how will you identify​

Answer 1

Answer:

Turmeric indicator is yellow in colour.

→ Take a few drops from each solution and test it with a turmeric solution. If the solution turns pink then the solution is basic i.e., sodium hydroxide. Mark the beaker(containing solution) as base.

→ Take a test tube and add a few drops of base solution and the second solution. Check if the test tube becomes warm and then add turmeric solution to it. If the colour does not change, it means the solution is acidic i.e., hydrochloric acid. The test tube becomes warm because of the neutralization effect.

→ If the test tube of the above solution does not become warm and it does show pink colour when turmeric solution is added, the second solution is neutral.

Explanation:

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Answer 2

Answer:

Turmeric solution turns red in contact with bases and is not affected by acids and neutral substances. Put one drop of each liquid as the turmeric paper. The liquid whose drop turns the paper red is solution hydroxide (base).

Now, this red turmeric paper may be used to identify which one of the remaining two liquids is hydrochloric acid. Put one drop of each of these remaining liquid on the red turmeric paper. The liquid whose drop will turn this red paper yellow is hydrochloric acid. This colour changes from red to yellow because hydrochloric acid neutralizes the pH effect of sodium hydroxide on turmeric paper.  

There is no effect on turmeric solution by sugar solution.

Explanation:

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