IB Chemistry SL 3.1.2 Conjugate acid-base pairs
IB Chemistry SL 3.1.2 Conjugate acid-base pairs
Sharpen conjugate-pair answers by checking for a one-proton difference and writing correct formulas for species formed after proton gain or loss.
How this is tested
- distinguish a true conjugate acid-base pair by checking for a one H+ difference, as in H2O / OH-
- write the conjugate base of phosphoric acid as H2PO4- with the correct charge after loss of one proton
- state both conjugate pairs in nitrous acid solution: H3O+ / H2O and HNO2 / NO2-