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Which of the following sentence best describes a buffer? A. Buffer is A substance that resists small change in the acidity of a solution when an acid or base is added to the solution.

B. A chemical substance that prevents changes in hydrogen ion concentration.

User Siukurnin
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1 Answer

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The correct answer is A. A buffer is a substance that resists small change in the acidity of a solution when an acid or base is added to the solution. Usually, a buffer involves a weak acid or a weak alkali and one of its salt.
User Vinit Saxena
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