Evaluate or Simplify the Expression Without Using a Calculator $\mathrm { pH }$

question 72

Multiple Choice

Evaluate or simplify the expression without using a calculator.
-The $\mathrm { pH }$ of a solution ranges from 0 to 14 . An acid has a $\mathrm { pH }$ less than 7 . Pure water is neutral and has a $\mathrm { pH }$ of 7. The $\mathrm { pH }$ of a solution is given by $\mathrm { pH } = - \log \mathrm { x }$ where $\mathrm { x }$ represents the concentration of the hydrogen ions in the solution in moles per liter. Find the $\mathrm { pH }$ if the hydrogen ion concentration is $1 \times 10 ^ { - 4 }$ .

• A) 4
• B) 10
• C) \(- 4\)
• D) \(- 10\)

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Definitions:

Vastus Lateralis

A large muscle on the side of the thigh, part of the quadriceps group, crucial for extending the knee.

Rectus Femoris

A muscle in the quadriceps that extends the knee and flexes the thigh at the hip.

Sartorius

The longest muscle in the human body, running from the hip to the knee and assisting in flexing, abducting, and laterally rotating the thigh.

Quadriceps Femoris

A large muscle group consisting of four muscles on the front of the thigh, primarily involved in knee extension and hip flexion.