Question

which kind of indicator petunia petal is?​

Answer 1

Explanation:

Petunia Petals: The anthocyanin petunin changes from reddish-purple in an acidic solution to violet in a basic solution. Poison Primrose: Primula sinensis has orange or blue flowers. The orange flowers contain a mixture of pelargonins.

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Answer 2

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Acid-base indicators

There are many other natural materials like red cabbage leaves, turmeric, coloured petals of some flowers such as Hydrangea, Petunia and Geranium, which indicate the presence of acid or base in a solution. These are called acid-base indicators or sometimes simply indicators.