Question

Two solutions A and B have oh value of 3 and 9.5 respectively. which of these will turn colourless to pink when phenolphthalein is adden

Answer 1

chemical B is basic as it's pH is 9.5

Answer 2

since Basic solutions turn colourless phenolphthalein into pink.Here solution B is basic(as it's pH is 9.5),so it will turn colourless to pink.