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what is the order used for ranking conjugate bases
C- charge
A- atom
R- resonance
I- induction
O- orbitals
What does a negative charge do to the electrons around a nucleus
-raises the number of them
-electrons cant get close due to repulsion, so they end up spreading out (having a bigger electron cloud)
What does a positive charge do to the electrons around a nucleus
-decreases number of electrons around nucleus, attracts electrons closer to nucleus
-lowers the energy and make it less reactive
when is charge relevant…?
when comparing acids and their conjugate bases, or vice versa
When looking at atoms while comparing bases when does basicity increase?
as the atom gets smaller and less electronegative
Smaller base makes a ______ bond to a proton (longer or shorter)
shorter (also stronger)
Is a smaller base a stronger or weaker base?
Stronger base
When going from R—>L within a same period, what are we concerned about for ranking basicity?
the electronegativity of atoms
Is a less electronegative base a weaker or a stronger base?
stronger base and less stable base
when looking at a same group, what are we concerned about for ranking basicity?
the size of atoms and stability of conjugate bases
When comparing acids what should you do?
-always draw out the conjugate base!
-the weaker base will be the stronger acid!!
Does resonance stabilize bases?
Yes, something without resonance will be less stable and therefore a stronger base.