the ph scale Flashcards
1
Q
what is the difference between a acid and alkali
A
acid has a ph lower then 7 due to its H+ ion
alkali has a ph over 7 due to its oh- ions
2
Q
what ph does water have
A
water is neutral and has a ph of 7
3
Q
what type of scale is the ph scale
A
NON-LINEAR (logarithmic). A change of IPH is a IOX change in concentration of H+ or OH- ions.
4
Q
what does universal indicator do
A
Gives you an indication of pH by changing colour.
5
Q
what can the ph also depend on
A
how strong or weak an acid is
6
Q
name some strong and weak acids
A
strong acids:
hydrochloric
sulphuric
nitric
Weak acids
ethanoic
Citric
carbonic
