A Beaker Contains 100 Millilitres (ML) of NaOH Solution at PH

question 4

Multiple Choice

A beaker contains 100 millilitres (mL) of NaOH solution at pH = 13. A technician carefully pours into the beaker 10 mL of HCl at pH = 1. Which of the following statements correctly describes the result of this mixing?

• A) The concentration of Na⁺ ions will rise.
• B) The pH of the beaker's contents will increase.
• C) The pH of the beaker's contents will be neutral.
• D) The pH of the beaker's contents will decrease.

---

Definitions:

Color Discrepancy

A difference in the perception or representation of colors between what is expected and what is perceived.

Trichromatic Theory

A theory explaining human color vision based on three types of cones sensitive to blue, green, and red wavelengths.

Receptors

Specialized cells or proteins that detect and respond to chemical signals, such as hormones or neurotransmitters.

Red

A primary color that can be perceived by the human eye and is often associated with meanings of love, danger, or warning.