M6 Topic 2 Using Bronsted-Lowry Theory Part 2 Flashcards
what are amphiprotic substances
substances that can donate and accept electrons
list an amphiprotic substance
Water (H₂O)
what is an example of water acting as a base
H2O(l) + HCl(aq) → H3O⁺(aq) + Cl⁻(aq)
what is an example of water acting as a acid
H2O(aq) + NH3(aq) → NH4⁺(aq) + OH⁻(aq)
what is the general composition of a neutral solution
equal amounts of [H3O⁺] ,[OH⁻]
what is the general composition of a acidic solution (2)
- higher [H3O⁺] concentration
- Lower [OH⁻] concentration
what is the general composition of a basic solution (2)
- Lower H3O⁺ concentration
- Higher OH⁻ concentration
what does each value in a periodic table mean (3)
- 7 = neutral solution
- < 7 = acidic solution
- > 7 = Basic solution
how do you calculate pH (2)
- find the concentration of H⁺ (H3O⁺)
- pH = - log [H⁺] ([ ] means concentration)
How do you calculate concentration from pH
[H⁺] = 10⁻ᵖᴴ
how do you calculate pOH (2)
- find the concentration of OH⁻
- pOH = - log [OH⁻] ([ ] means concentration)
How do you calculate concentration from pOH
[OH⁻] = 10⁻ᵖᴼᴴ
what is the relation between pH and pOH
pH + pOH = 14