What color would a phenolphthalein solution be at ph=11 ?

Pink

Explanation:

The Ph scale is used to determine if a chemical compound is an acid, a base or neutral. The scale ranges from 0 to 14.

Acids turn litmus red and have a ph range between 0 and 6.9. Bases turn litmus blue and  have a ph range between 8.2 and 14.

Phenolphthalein is ordinarily colorless however, in a basic solution which gives a ph of 11, it is is gives a pink coloration.

if you're asking what comes out, it's steam.

a) the particles of the chair are strongly held together.