DAT DAT - Dental Admission General Chemistry: Acid-Base Chemistry

Question 1

What is the pH of a solution where [H⁺] = 1 × 10⁻³ M?

Accepted Answer

3

Answer

pH = -log[H⁺] = -log(10⁻³) = 3.

Question 2

According to the Brønsted-Lowry definition, an acid is a substance that:

Accepted Answer

Donates a proton

Answer

A Brønsted-Lowry acid is defined as a proton (H⁺) donor.

Question 3

When H₂CO₃ donates one proton, its conjugate base is:

Accepted Answer

HCO₃⁻

Answer

Removing one proton from H₂CO₃ produces its conjugate base HCO₃⁻ (bicarbonate ion).

Question 4

A strong acid in aqueous solution:

Accepted Answer

Completely dissociates

Answer

Strong acids dissociate completely in water, releasing all available H⁺ ions into solution.

Question 5

What is the pOH of a solution where [OH⁻] = 1 × 10⁻⁵ M?

Accepted Answer

5

Answer

pOH = -log[OH⁻] = -log(10⁻⁵) = 5.

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