pH Flashcards
What does pH measure?
acidity
What is the unit for pH?
-log10[H+]
What is pH and equilibrium between?
H+ and OH-
How many parts are there to the pH scale?
14
What is neutral on the pH scale?
around 7
What is the acidic range on the pH scale?
when you start dropping below 7
What is the alkaline range on the pH scale?
start going above 7
What has a pH of 0?
battery acid
What has a pH of 1?
stomach acid
What has a pH of 2?
lemon juice
What has a pH of 3?
orange juice
What has a pH of 4?
acid rain
What has a pH of 5?
black coffee
What has a pH of 6?
urine
What has a pH of 7?
‘pure’ water
What has a pH of 8?
sea water
What has a pH of 9?
baking soda
What has a pH of 10?
milk of magnesia
What has a pH of 11?
ammonia
What has a pH of 12?
soapy water
What has a pH of 13?
bleach
What has a pH of 14?
drain cleaner
What will acids do with their protons?
will donate one or more
What will alkaline do with their protons?
accept one or more protons
What is a strong acid?
fully dissociate to release all potential acidity
What is an example of a strong acid?
hydrochloric acid
What do weak acids do?
partially dissociate
What is an example of a weak acid?
acetic acid
What do we use to calculate pH of weak acids?
acidity constant Ka
What is pH often controlled by in the environment?
weak acids
When does carbonic acid form?
dissociation of CO2 into ocean
What is the acidity constant?
Ka
What is the water constant?
Kw
What makes rainwater acidic?
CO2 dissolves into water creating carbonic acid (weak)
What is a weak acid?
One which partially disassociates or deproteinates
What is stochiometry?
amount of substance involved in a reaction and how it should be balanced on both sides of the equation
