A Beaker Contains 100 ML of NaOH Solution at PH

question 8

Multiple Choice

A beaker contains 100 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 results of this mixing?

• A) The concentration of Na+ ion will rise.
• B) The concentration of Cl- ion will be 0.1 M.
• C) The concentration of undissociated H₂O molecules will remain unchanged.
• D) The pH of the beaker's contents will be neutral.
• E) The pH of the beaker's contents will decrease.

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Definitions:

Monocytes

A type of white blood cell that plays a role in the immune system by fighting infections and helping other white blood cells remove dead or damaged tissues, destroy cancer cells, and regulate immunity against foreign substances.

Macrophages

A type of white blood cell that engulfs and digests cellular debris, foreign substances, and pathogens.

Body Defense Mechanism

The biological structures and processes within an organism that protect against disease by identifying and killing pathogens and tumor cells.

Pathogen

An organism such as a bacteria, virus, fungus, or parasite that can cause disease in its host.