Question

Name of acid Effect on litmus paper Effect on turmeric paper Effect on China rose solution Dilute hydrochloric acid
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Answer 1

Hey there!!

Answer:

1.Red litmus contains a weak diprotic acid. When it is exposed to a basic compound, the hydrogen ions react with the added base. The conjugate base formed from the litmus acid has a blue color, so the wet red litmus paper turns blue in alkaline solution.

2.How Turmeric is used as indicator?

The active ingredient present in turmeric is curcumin as an acid-base indicator that is yellow in acidic and neutral solutions and orange or reddish-brown in basic solutions.

3.China rose converts acidic solution to dark pink, basic solutions to green colour and has no colour change for neutral solutions. China rose is a natural indicator and is used to identify the acidic or basic nature of a solution.

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