A solution has a pH value around 13.0. The solution may be called

a strong acid

a strong base

neutral

a weak acid

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UPSC CISF-AC-EXE – 2024

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The pH scale measures the acidity or basicity of an aqueous solution. The scale ranges typically from 0 to 14. Solutions with a pH less than 7 are acidic, a pH of 7 is neutral, and solutions with a pH greater than 7 are basic (alkaline). A pH value around 13.0 is significantly greater than 7 and is close to the maximum value on the scale, indicating a highly basic solution.

A pH value of 13.0 indicates a strong base because it is high on the pH scale (greater than 7).

Strong acids have very low pH values (close to 0 or 1), weak acids have pH values between 1 and 7, neutral solutions have a pH of 7, weak bases have pH values between 7 and 14, and strong bases have very high pH values (close to 13 or 14). Examples of strong bases include sodium hydroxide (NaOH) and potassium hydroxide (KOH).

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