Question

Hello guys!!!!!!!!! please help me to solve this:- what is phenol phthelien? ​

Answer 1

Explanation:

Phenolphthalein is an indicator which remains colourless in acidic and medium and changes it's colour to pink in basic medium. The structure of phenolphthalein has phenol ring so its weak acid able to lose H+.

It is mildly acidic in nature (i.e a weak acid) and hence it undergoes a colour change to pink in basic conditions.

Due to this property of phenolphthalein, it is also used in acid-base titration.

Phenolphthalein is a weak acid indicator. It is colourless and its ions are brightly pink. It is colourless below 7 and adding hydroxyl ions turns it to bright pink in colour.

Please mark me as Brainliest,Thank you and follow me.

Answer 2

Answer:

A colourless crystalline solid used as an acid-base indicator and medicinally as laxative