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Physical Test

Two solutions...

Question

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?

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Solution

Solution A, being acidic, with a pH value of 3.0, will turn litmus solution from blue to red, and solution B, being basic, with a pH value of 9.5, will turn phenolphthalein from colourless to pink.

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