Three solutions a, b, and c pH 2, 8, and 7 respectively . Which one of these will turn phenolphthalein indicator pink? (Hint : which substance turns phenolphthalein pink)
Answers
Answer:
Solution with pH - 8
Explanation:
As pH value increases from acids to bases, pink colour is observed in phenolphthalein when it is added to a base. Out of three solutions 1st solution is acid, 2nd solution is a base(weak base), 3rd solution is salt(neutral). So, The answer is 2nd solution
Solution b with pH of 8 will turn phenolphthalein indicator pink
Explanation:
pH is defined as the measure of hydrogen ion in a solution. It ranges from 0 to 14. A solution having a pH range from 0 to 6.9 is known as acidic solution and the solution which have a pH range from 7.1 to 14 is known as basic solution.
Phenolphthalein is an indicator which produces pink colour on adding into a base and turns colourless on adding to an acid.
Thus phenolphthalein will turn pink on addition into solution b which is base as it has a pH of 8
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