Module 2: Acids and Redox Flashcards
What is another name for a hydrogen ion?
Proton
What are acids classified as?
Proton donors
Why are most acids only acidic once in solution?
Because the ions are free to move
What is the formula for hydrochloric acid?
HCl
What is the formula for sulphuric acid?
H₂SO₄
What is the formula for nitric acid?
HNO₃
What is the formula for phosphoric acid?
H₃PO₄
What is the formula for ethanoic acid?
CH₃COOH
What is the pH of a high hydrogen ion concentration?
Low pH
What is the pH of a low hydrogen ion concentration?
High pH
What is a strong acid?
A strong acid is an acid that has fully dissociated hydrogen ions
What is a weak acid?
A weak acid is an acid that has only partially dissociated hydrogen ions
What is the formula of the base sodium hydroxide?
NaOH
What is the formula of the base potassium hydroxide?
KOH
What is the formula of the base ammonia?
NH₃
What is the definition for a base?
A proton acceptor
What is the definition of a salt?
An acid where one or more of its hydrogen ions is replaced with a metal ion or an ammonium ion
What is oxidation?
Loss of electrons (OILRIG)
What is reduction?
Gain of electrons (OILRIG)
What is the oxidation number?
A number to tell how many electrons have been lost or gained
What is a disproportionation reaction?
A redox reaction in which an element is both oxidised and reduced
What does the roman numerals refer to?
Oxidation state
