Acids and Bases Flashcards
What is a Bronsted acid?
Any substance that can donate a proton to another substance
What is a Bronsted base?
Any substance that can accept a proton
What is an amphiprotic species?
A species that can act as either an acid or a base
What is a triprotic acid?
A substance that can donate up to three protons on reacting with H2O
If the K value of an acid is high then the acid is…?
Strong
Would Cl, NO2, CO2 strengthen or weaken an acid?
Strengthen
Arrange in order of acid strength: Alcohols, Carboxylic acids, Phenols
Alcohols, phenols, carboxylic acids
Would the presence of a Ch3 substituent increase the acidity of a phenol?
No-Ch3 is electron donating
The harder it is to remove a proton from a species, the …. the acid
Weaker
The higher the electronegativity of the atom that H is bonded to, the … the acid
Stronger
What is an oxoacid?
An acid which contains an oxygen
Why does having more electronegative atoms attached to the central atom increase acid strength?
The negative charge on the resulting anion is more easily delocalised with more electronegative atoms, making it more stable
Kw is called
The autoprotolysis constant of water
In a weak acid calculation, the concentration of the conjugate base is equal to that of the…?
Concentration of H3O+
In a weak acid calculation, the concentration of the acid is equal to …?
The initial concentration - H3O+ concentration