A 100 ML Beaker Contains 10 ML of NaOH Solution

question 9

Multiple Choice

A 100 mL beaker contains 10 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 rises.
• B)The concentration of Cl⁻ ion falls.
• C)The concentration of undissociated H₂O molecules remains unchanged.
• D)The pH of the beaker's contents rises.
• E)The pH of the beaker's contents falls.

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