In acid-base terms, a base is a substance that

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Study for the IMAT Chemistry Exam. Access flashcards and multiple choice questions; hints and explanations included for each question. Prepare effectively for your exam.

Multiple Choice

In acid-base terms, a base is a substance that

Explanation:
Bases act to reduce the amount of free hydrogen ions in solution, either by accepting protons or by producing hydroxide ions that combine with H+ to form water. This rise in pH reflects a decrease in hydrogen ion concentration. So the statement describing a base as decreasing the hydrogen ion concentration is the right one. Donating protons is what acids do, not bases; increasing hydrogen ion concentration is also an acid behavior; litmus turning red signals acidity (not basicity), whereas bases typically turn litmus blue.

Bases act to reduce the amount of free hydrogen ions in solution, either by accepting protons or by producing hydroxide ions that combine with H+ to form water. This rise in pH reflects a decrease in hydrogen ion concentration. So the statement describing a base as decreasing the hydrogen ion concentration is the right one. Donating protons is what acids do, not bases; increasing hydrogen ion concentration is also an acid behavior; litmus turning red signals acidity (not basicity), whereas bases typically turn litmus blue.

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