AP Chemistry 8.1 & 8.2 Acids & Bases Intro

According to Brønsted-Lowry definitions, what is an acid?

• A proton (H+) acceptor

• A substance that dissolves in water to produce OH- ions

• A proton (H+) donor

• A substance that completely ionizes in water

What is the characteristic of a strong acid or strong base according to the document?

• They do not ionize at all in water.

• They partially ionize in water.

• They completely ionize in water.

• They increase the pH level of water.

What is the equation of the autoionization of water?

• 2H2O(l) ⇌ H3O+(aq) + OH-(aq)

• H2O(l) + CO2(g) ⇌ H2CO3(aq)

• H2O(l) ⇌ H+(aq) + OH-(aq)

• H2O(l) + H2O(l) ⇌ H2O2(aq) + H2(g)

What is the value of Kw at 25°C?

• 1 x 10^-7

• 1 x 10^-14

• 1 x 10^-10

• 1 x 10^-1

Water is described as what type of chemical?

• Acidic

• Basic

• Neutral

• Amphoteric

What does the "p" in pH stand for?

• Positive

• Potential

• Power

• Negative logarithm

At what temperature is the pH scale diagram provided?

• 0°C

• 25°C

• 37°C

• 100°C

What is the pH value of a neutral solution at 25°C?

• 0

• 7

• 10

• 14

According to the pH scale, as the concentration of hydronium ions [H3O+] increases, the pH value:

• Increases

• Decreases

• Remains constant

• Fluctuates unpredictably

What is the relationship between pH and pOH at 25°C?

• pH + pOH = 7

• pH - pOH = 14

• pH * pOH = 14

• pH + pOH = 14