chemical reactions - strong and weak acids Flashcards
what happens to acid molecules in aqueous solutions
they ionise and release hydrogen ions from
what are strong acids?
fully ionise in aqueous solutions
example of strong acid formula?
what do the arrows mean?
HCL -> H+ + Cl-
HNO3 -> H+ + NO3-
arrow in one direction means fully ionised
what are weak acids? what type of arrow do weak acid formulas have?
partially ionise in aqueous solutions
<- reversible reaction
->
examples of weak acids?
carbonic, ethanoic, citric acid
what does the pH scale give us an idea of?
the concentration of hydrogen ions and hydroxide
Strong acids have a _______ pH than ______ acids for given ___________ because ________ acids fully _____ producing a ________ _____________ of _________ ions
lower, weak, concentration, strong, ionise, greater concentration, hydrogen
what does the concentration of acid tell us?
the amount of acid molecules in given volume
______ acid has _______ acid _________ than concentrated ______ even if the _________ of the ____ is the same
dilute, fewer, molecules, acid, strength, acid
what happens as the pH scale decreases by 1 unite?
concentration of hydrogen ions increase by 10 times
what is one order of magnitude?
ph 1 - ph 2
10x difference between ph
what is two orders of magnitude?
ph 1 - ph3
the difference between 2 ph