20.3 the acid dissociation constant Ka Flashcards Preview

Fckn Chemistry Module 5 > 20.3 the acid dissociation constant Ka > Flashcards

Flashcards in 20.3 the acid dissociation constant Ka Deck (10):
1

What does Ka change with?

Temperature

2

What does a larger Ka value show?

More dissociation and greater acid strength

3

What does a strong acid have?

Larger Ka and smaller pKa

4

What does a weak acid have?

Smaller Ka and larger pKa

5

Why do wines contain sulphuric acid?

As a preservative

6

What is the first dissociation of H2SO3?

H2SO3 <=> H+ + HSO3^- to a weak acid

7

What is the second dissociation of H2SO3?

HSO3^- <=> H+ + SO3^2-

8

How do dicarboxylic acids dissociate?

One H+ at a time

9

Do alcohols dissociate?

No

10

Why dont alcohols dissociate?

The OH group is much weaker than e.g. the COOH group)