list of solutions of acidic and basic with the pH values
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More precisely, pH is the negative of the base 10 logarithm of the activity of the hydrogen ion. At 25 °C, solutions with a pH less than 7 are acidic, and solutions with a pH greater than 7 are basic.
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pH indicators.
Substance npH range Type
Vinegar 2.5 Acid
Orange juice. 3.3 – 4.2
Black coffee. 5 – 5.03
Milk. 6.5 – 6.8
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