The Hydrogen Potential $\mathrm { pH }$ , of a Substance Is Defined By

question 356

Multiple Choice

The hydrogen potential, $\mathrm { pH }$ , of a substance is defined by $\mathrm { pH } = - \log \left[ \mathrm { H } ^ { + } \right]$ , where $\left[ \mathrm { H } ^ { + } \right]$ is measured in moles per liter. Find the pH of a sample of lake water whose $\left[ \mathrm { H } ^ { + } \right]$ is $3.05 \times 10 ^ { - 9 }$ moles per liter. (Round to the nearest tenth.)

• A) 7.3
• B) 10.1
• C) 8.5
• D) 6.4

---

Definitions:

Two-cycle Breathing

A breathing technique that involves inhaling and exhaling in two distinct phases or cycles, often used in swimming or respiratory exercises.

Birds

Warm-blooded vertebrates characterized by feathers, beaked jaws, and typically the ability to fly.

Presentation Style

The way in which information is shown or explained to an audience, including the use of visuals, speech, and other media.

Group

A number of individuals or items that are located, gathered, or classed together.