34
QuizMultiple Choice

Lab: Measuring pH — Unit test

Question 34 • Foothill-B Period-Chemistry-26/27B

What is the Arrhenius definition of an acid?

Answer
A
A substance that increases H3O+ concentration when it is dissolved in water.
B
A substance that increases OH– concentration when it is dissolved in water.
C
A compound that donates protons.
D
A compound that accepts protons.

Explanation

An Arrhenius acid increases the concentration of H₃O⁺ ions when dissolved in water. Therefore, the correct choice is “A substance that increases H₃O⁺ concentration when it is dissolved in water.”

AI-written and checked against the verified answer.

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