IONIZATION OF WEAK ELECTROLYTES (1)

weak electrolytes

are substances whose water solutions contain
comparatively few charged particles or ions.

Characteristic of Weak Electrolytes
- Do not conduct electricity effectively

• As a consequence it form an equilibrium since the reaction is reversible.

• They are comparatively smaller in number than strong electrolytes
  

true

Importance of Weak Electrolytes in Biological Functions

Controls blood, milk, digestive juices and other body fluids

Living tissues are highly buffered (pH regulated)

Hydronium ion concentration in protoplasm is necessary for life maintenance

true

According to BRONSTED-LOWRY THEORY
An acid is a proton donor in aqueous solution

acceptor

According to BRONSTED-LOWRY THEORY

A base is a proton ______ in aqueous solution

AMPHIPROTIC SUBSTANCE

Substances that possess both acidic and basic properties

more acidic

acids with higher percentage of dissociation/ionization, is _____ than
those with lower percentage of dissociation/ionization
(true/false)

more basic

bases with higher percentage of
dissociation/ionization, is ______
than those with lower percentage of
dissociation/ionization. (true/false)

more acidic

the higher the Ka, ______

less acidic

with higher pKa, less _____

more

the higher the Kb (more/less) basic

less

higher pKb, less/ more basic

increases from left to right and from top to bottom

If the atom is directly attached to one of the elements in the halogen group e.g. F,Cl, Br, I, the
trend for acidity

weaker

The stronger the acid, the weaker/stronger its conjugate base

weaker

The stronger the base, the stronger/weaker its
conjugate acid.

oxygen, electronegativity

For oxyacids, the acid with more _______ will be more acidic due to _______

atomic size, increases

For binary acids, refer to _______ trend which (decreases/increases) acid strength as you go down the
periodic table