8.1

What is the concentration of hydronium ion reported as?

pH

What is the concentration of hydroxide ion reported as?

pOH

Equation relating pH to [H3O+]:

pH = -log[H3O+]

Equation relating pOH to [OH-]:

pOH = -log[OH-]

What is the term “hydrogen ion” interchangeable with?

Hydronium ion

What is the symbol H+(aq) interchangeable with?

H3O+(aq)

Does water autoionize?

Yes

What is the equilibrium constant symbol for water?

Kw

Write the expression for Kw:

[H3O+][OH-]

What is the value of Kw at 25 degrees celsius?

1.0×10^-14

What is pH equal to in pure water?

pOH

What kind of solution has pH = pOH?

Neutral solution

What is pKw equal to at 25 degrees celsius?

14.0

What is pH + pOH equal to at 25 degrees celsius?

14

What does Kw depend on?

Temperature

What does pH of pure, neutral water deviate from at temperatures other than 25 degrees celsius?

7.0

What is a Bronsted-Lowry acid?

Proton donor

What is a Bronsted-Lowry base?

Proton acceptor

When does water play a role in acid-base reactions?

In aqueous solutions

Why does water play a role in acid-base reactions?

Its molecular structure allows it to accept protons from and donate protons to dissolved species

What can be identified when an acid or base ionizes in water?

Conjugate acid-base pairs

What about the conjugate acid0base pairs can be compared when an acid or base ionizes in water?

Their relative strengths