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Q14 (CISF/2024) Science & Technology › Basic Science (Physics, Chemistry, Biology)

A solution has a pH value around 13-0. The solution may be called

Explanation

The pH scale is used to determine the acidity or basicity (alkalinity) of an aqueous solution, typically ranging from 0 to 14. The scale is logarithmic and measures the concentration of hydrogen ions (H+) in a solution.

  • pH < 7: The solution is acidic. The closer the value is to 0, the stronger the acid.
  • pH = 7: The solution is neutral (e.g., pure water at 25°C).
  • pH > 7: The solution is basic or alkaline. The closer the value is to 14, the stronger the base.

A pH value of 13-0 (representing 13.0) is very high on the scale, indicating a very low concentration of H+ ions and a high concentration of hydroxide ions (OH-). Therefore, the solution is classified as a strong base. Common examples include concentrated sodium hydroxide (NaOH).

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