Question

ph, acids and bases quick check
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 lower ph has 1,000 times 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 higher ph has 1,000 times as many hydrogen ions per volume of water.
the substance with the higher ph has twice as many hydrogen ions per volume of water.

Explanation:

The pH scale is logarithmic. A difference of 1 in pH represents a ten - fold difference in hydrogen ion concentration. A difference of 3 (as between pH 3.0 and pH 6.0) represents a $10^3=1000$ - fold difference, with the lower pH having more hydrogen ions.

Answer:

The substance with a pH of 3.0 has 1,000 times as many hydrogen ions per volume of water as the substance with a pH of 6.0.