Question

13. When phenolphthalein is added to a acidic solution, it gives
(a) pink colour
(b) red colour
(c) blue colour
d) no colour​

Answer 1

Explanation:

Phenolphthalein remains colorless throughout the range of acidic pH levels but begins to turn pink at a pH level of 8.2 and continues to a bright purple in stronger alkalines. Therefore, the correct answer is