For Qn
1c) can I say pka for h2o2 is lower cos it is stabilized by
INTRAmolecular hydrogen bond? Also, can I say pka got CH3CO3H is
higher cos of the electron donating OH group attached to the O
atom?
Qn 4aii)
can I just say cos Cl- electron donating (with elaboration) and
showing the dissociation of both acids using equations. Will I get
the full credit? I also briefly explained that there are
carboxylate acids cos resonance stabilized(due to 2 O atoms bla
bla)
Qn 4d)
since both qns are 1m I just say like... For di) I say is tyrosine,
Hydrogen bond
Dii)
valine, VDW. Only like that cos I see is 1m... Do I need to
say other types of bondings also or just say one for one part will
suffice
Q1c) Yes, intramolecular hydrogen bonding is acceptable. No, you
cannot say OH group is electron-donating.
Q4ai) Cl is electron-withdrawing, not electron-donating. Since both
have the same COOH groups, hence for a comparison question, no
marks will be given for talking about resonance delocalization of
across both O atoms, which applies for both species.
4d) No worries, it should be fine to specify just one correct pair
of interactions.