What do you understand by ph value. Two solution x and y have ph value 4 and 10 respectively. Which one of these two will give pink colour with phenolphthalin indicator
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Answer: pH value is the negative logarithm of H+ concentration in the solution.
Explanation:
The solution of pH 10 will turn phenolphthalein pink, as phenolphthalein is turned pink in the presence of bases (substances having pH greater than 7)
Substances having pH less than 7 are called acids.
Substances having pH equal to 7 are called neutral
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