Acids, Bases And Salts Flashcards
Acids in solution release…
H+ ions
pH measures …
How acidic or alkaline a solution is
Alkalis in solution release…
OH-
You measure the pH of a solution using an…
indicator
As the concentration of ions increases…
the pH decreases
Litmus: colour in acid…
red
Litmus: colour in neutral solution…
purple
Litmus: colour in base…
Blue
Methyl orange colour in acid…
red
Methyl orange colour in neutral solution…
yellow
Methyl orange colour in base…
yellow
Phenolphthalein colour in acid…
colourless
Phenolphthalein colour in neutral solution…
colourless
Phenolphthalein colour in base…
pink
a base is…
any substance that reacts with an acid to form a salt and water only
alkalis are…
soluble bases
a weak acid is…
an acid that is partially dissociated into its ions in an aqueous solution or water
a strong acid is…
an acid that is completely dissociated or ionized in an aqueous solutoon
the concentration of an acid measures…
how much acid there is in a litre(1dm3) of water
as hydrogen ion concentration in a solution increases by a factor of 10….
, the pH of the solution decreases by 1
a dilute acid is…
an acid in which the concentration of the water mixed in the acid is higher than the concentration of the acid itself
What is a neutralisation reaction?
A reaction between an acid and a base
What is an acid-alkali neutralisation
A reaction in which hydrogen ions(H+) from the acid react with hydroxide ions(OH-) from the alkali to form water
