Acids And Bases Flashcards
What are acids
Proton donors
What are bases
Proton acceptors
Monobasic acid
Acid releasing one proton (1 H+)
(a) Explain why the expression for Kw does not include the concentration of water.
Very few H+ and OH− ions OR Only / very slightly dissociates OR Equilibrium lies far to the side where water is produced
Bonstead Lowry acid dissocociation
HA = A- + H+
Bonstead lowry acid + water dissociation
HA + H20 = H30+ + A-
Bonstead lowry base and water dissocociation
B + H20 = BH+ + OH-
What are monobasic acids
One proton per molecule released into solution eg HCL
What is the main chemical in a blood buffer
H2CO3
What is H2CO3 converted to in a buffer
H+ and HCO3 reversible reaction
What is the normal PH of blood
7.35-7.45
How does the body remove too alkaline
OH reacts the H+ forming H20 so more H2co3 can dissociate. Still too acidic to enzyme breaks down excess H2CO3 into CO2(aq) and H20. CO2 turned into gas and released in respiration
For a strong acid what conc equals what
conc of H+ same as (HA) as fully disassociates
for a weak acid what conc equals what (2)
(h+)=(a-) as molar ratio is same
and (HA end) = (HA original)
when assuming (H+) =(A-) in a weak acid what r the drawbacks
Assuming the disassociation of water is negligible
If acid is very weak/dilute does not apply
