Question

what is the colour of phenolphthalen solution when it react with bases​

Answer 1

Answer:

pink

Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions.

Answer 2

Answer:

➝ Dark Pink

Explanation:

Phenolphthalein solution is a colourless synthetic indicator. When it reacts with acid, its colour doesn't change and its colour still remains same. Whereas, when it reacts with bases, its colour changes to dark pink.

Dark pink is the required answer.

Some more points related to topic :

• Indicators are those substances that are used to recognize either the substance is acidic or basic in nature.

• Indicators change their colour on coming in contact with the substance we want to test. (In some cases, it remains unchanged. Example, when phenolphthalein comes in contact with acids, it remains unchanged.)

• Natural indicators are made from the substances found in our nature like leaf, flowers etc.Examples : Litmus, china rose, turmeric.

• Synthetic Indicators are made from dyes in laboratories and factories. Examples : Phenolphthalein, Methyl orange.