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Two solutions A and B have pH values of 3.0 and 9.5 respectively. Which of these will turn litmus solution from blue to red and which will turn phenolphthalein from colourless to pink?
Solution A, having a pH of 3.0, will be acidic as pH is less than 7. Therefore, it will change the litmus solution from blue to red.
Solution B, having a pH of 9.5, will be basic as pH is greater than 7. Therefore, it will turn phenolphthalein from colourless to pink.
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