Question

question which of the following statements about the ph scale are true? select all that apply a solution with a ph of 7 has an equal number of hydrogen and hydroxide ions. the ph scale is a logarithmic scale based on powers of 10. a ph of 0 means there are no free hydrogen ions in the solution. a solution with a ph of 2 has 100 times more free hydrogen ions than a solution with a ph of 4.

Explanation:

• A pH of 7 is neutral, meaning equal hydrogen and hydroxide ions.
• The pH scale is logarithmic with base - 10.
• A pH of 0 has a high concentration of free hydrogen ions, not zero.
• Since pH is a logarithmic scale, a difference of 2 pH units means a 100 - fold difference in hydrogen - ion concentration.

Answer:

A. A solution with a pH of 7 has an equal number of hydrogen and hydroxide ions.
B. The pH scale is a logarithmic scale based on powers of 10.
D. A solution with a pH of 2 has 100 times more free hydrogen ions than a solution with a pH of 4.