Which is more basic (or more alkaline): a solution of pH = 8 or a solution of pH = 11?

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Solution

The higher the pH, the stronger the base. Thus, a solution of pH 11 is more alkaline than a solution of pH 8.

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According to Arrhenius theory, acids and bases release H+ ions and OH- ions respectively in aqueous solution. However, their relative strengths are expressed in terms of pH value which is mathematically negative logarithm of H+ ion concentration. Infact, there is a scale known as pH scale which ranges from zero to 14. Solution with pH equal to 7 is regarded as neutral solution. Solution with pH less than 7 is acidic while the one with pH more than 7 is regarded as basic. It may be noted that more acidic is a solution, lesser will be its pH . The more alkaline is a solution, higher will be its pH value. Can we prepare a solution with a pH of more than 14?

Write acidic or basic for a solution when its pH is 8.

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