Give the pH range of acidic, neutral and basic solutions at $25^{o} C$ .

< 7, 7, > 7

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< 8, 9, > 10

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< 6, 7, > 7

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< 5, 6, > 7

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Solution

The correct option is B $< 7, 7, > 7$
pH is a numeric scale used to specify the acidity or alkalinity of an aqueous solution. It is the negative of the logarithm to base 10 of the activity of the hydrogen ion. Solutions with a pH less than 7 are acidic and solutions with a pH greater than 7 are alkaline or basic at temperature $25^{o} C$ .

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