Two solutions A and B have pH values of 3.0 and 9.5 respectively. Which of these will tum litmus solution from blue to red and which will tum phenolphthalein from colourless to pink?
Solution A will turn blue litmus into red, as it has low pH indicating it as a strong acid.
Solution B will turn phenolphthalein into pink as the pH is between 7 and 14, indicating it as alkali.