pH, Acids, Alkalis and Bases Flashcards
pH stands for
Potential of Hydrogen
Acids are;
Anything that has an aqueous solution of less than pH7
Acids disassociate into…
An abundance of Hydrogen (H+) Ions in water, This makes them Acidic.
in simple terms. Alkalis are
Anything greater than pH 7
Alkalis form…
Hydroxide or OH- Ions to make the substance Alkaline
Acids and Bases react to produce…
a salt and water
What is going on here: H+ + OH- —> H2O + Salt
Neutralisation
Acids are made of substances that ionise to form
aqueous solutions with a pH less than 7
What does ionise mean?
Disassociate into their Ions (H+)
Weak acids ionise
partially, meaning only some of the acid particles disassociate to form H+ Hydrogen Ions
Strong Acids ionise..
fully to disassociate all particles into H+
(In terms of equilibrium) Weak acids often have
a far left equalibrium, more molecules are undisasociated than those that disassociated. These are often reversible reactions
A weak acid example could be:
Carbonic Acid
Citric Acid
Ethanoic Acid
A Strong Acid example would be…
Hydrochloric Acid
in terms of pH, Higher Concentration of H+ equals…
A lower pH because the acid molecules fully disassociate
