Question

Which of the following solution will turn phenolphthalein Pink?

(a) HCl(aq) (b) CO2(aq) (c) KOH (aq) (d) H2SO4 (aq)​

Answer 1

Answer:

LiOH is a base and will turn the colour of phenolphthalein pink. Lime water is a calcium hydroxide solution, Ca(OH)2, which is a base. Lime water was added to the regular water in the solution. Lime water is a base, so when the phenolphthalein was added to the solution, it turned the solution pink.