How are acids and protons related? (1 point)

Question

• An acid can donate protons to a base when they react.
• An acid can accept a proton from a base when they react.
• Acids are substances that contain more protons than bases.
• Acids are substances that contain fewer protons than bases.

Which statement best describes the difference between a substance with a pH of 3.0 and a substance with a pH of 6.0? (1 point)
The substance with the higher pH has twice as many hydrogen ions per volume of water.
The substance with the lower pH has twice as many hydrogen ions per volume of water.
The substance with the lower pH has 1,000 times as many hydrogen ions per volume of water.
•
The substance with the higher pH has 1,000 times as many hydrogen ions per volume of water.

Answer 1

Question 1: How are acids and protons related?
The correct answer is: An acid can donate protons to a base when they react.
This statement accurately reflects the Bronsted-Lowry definition of acids, where acids are proton donors.

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Question 2: Which statement best describes the difference between a substance with a pH of 3.0 and a substance with a pH of 6.0?
The correct answer is: The substance with the lower pH has 1,000 times as many hydrogen ions per volume of water.
This is because the pH scale is logarithmic; a difference of 3 in pH corresponds to a difference of 10^3, or 1,000 times, in hydrogen ion concentration.