The solutions which tend to keep the concentration of hydrogen ions constant, even when small amounts of strong acid or strong base are added to them, are known as:

isohydric solutions

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buffer solutions

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isotonic solutions

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neutral solutions

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Solution

The correct option is B buffer solutions
Buffer solutions have the capacity to react with small amounts of added acid or base without affecting the hydrogen ion concentration of the solution.

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The solutions which tend to keep the concentration of hydrogen ions constant, even when small amounts of strong acid or strong base are added to them, are known as:

The correct option is B buffer solutionsBuffer solutions have the capacity to react with small amounts of added acid or base without affecting the hydrogen ion concentration of the solution.

The correct option is B buffer solutions
Buffer solutions have the capacity to react with small amounts of added acid or base without affecting the hydrogen ion concentration of the solution.