pH Scale (Leaving Cert Chemistry): Flashcards

Measure of acidity/basicity based on $H^+$ concentration

$pH = -\log[H^+]$

moles per litre (mol/L)

0 to 14

7

Acidic solution

Basic (alkaline) solution

Fully dissociate

Lower pH

$OH^-$ ions (hydroxide ions)

Higher pH

Accurate, direct reading of pH

Changes colour based on pH

Only for dilute aqueous solutions

Diprotic acid