If 2 unidentified acid solutions are both labeled 0.50M, how can you tell which is the...

If 2 unidentified acid solutions are both labeled 0.50M, how can you tell which is the strong acid/weak acid?

Expert Solution

very simple dear

carry out a tittation with weak base using suitable indicator like phenolphthalein.

In our experiment we have to possibilities:-

A) weak acid Vs weak base

B) strong acid Vs weak base

let's start discussion about both possibilities:-

Take a solution of acid in a conical flask add few drops of phenolphthalein indicator to it.

Now add 0.2 mL of weak base and observe the inference.

• If you get light pink colour on addition of weak base , then the given acid is a weak acid. Because weak acid can't react with weak base and phenolphthalein eill show you light pink colour.

•If you are not getting light pink colour on addition of 0.2 mL of weak base then the given acid is strong acid as added weak base neutralised by strong acid. Hence phenolphthalein is still resides in acidic medium and as we know that phenolphthalein is colourless in acidic medium.

queen_honey_blossom answered 2 years ago

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If 2 unidentified acid solutions are both labeled 0.50M, how can you tell which is the...

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