At the organic chemistry level, we can look at the basicity in terms of stability of the anions
produced.
-F, -NO2 , -C2H3O2, -OCl, and -CN
1) FIrstly, -C2H3O2, and -NO2 have resonance structures that help stablize the negative charge,
so they are pretty stable (weak base)
2) Comparing -F, -OCl, and -CN is a bit trickier, although the shortcut would just be to say that
having an extra electron on C leads to instablilty (making it reactive and basic). However, lets
look at the other two first. For -F, the atom is able to accomdate the extra electron with its space
and nuclear charge; for -OCl, the chlorine is quite electronegative and will help stabilize the
extra electron on the oxygen.
3) Out of all these structures, E) NH4CN would be the most basic.
Another \"shortcut\" would be to look up the pka of these structures. the HIGHER the pKa, the
more basic they are; and vice versa.
Note: SInce the concentration is the same, we only worry about the intrinsic properties of these
molecules.
Varying concentrations would be a bit more mathematical.
I HOPE THIS HELPS. GOOD LUCK
Solution
At the organic chemistry level, we can look at the basicity in terms of stability of the anions
produced.
-F, -NO2 , -C2H3O2, -OCl, and -CN
1) FIrstly, -C2H3O2, and -NO2 have resonance structures that help stablize the negative charge,
so they are pretty stable (weak base)
2) Comparing -F, -OCl, and -CN is a bit trickier, although the shortcut would just be to say that
having an extra electron on C leads to instablilty (making it reactive and basic). However, lets
look at the other two first. For -F, the atom is able to accomdate the extra electron with its space
and nuclear charge; for -OCl, the chlorine is quite electronegative and will help stabilize the
extra electron on the oxygen.
3) Out of all these structures, E) NH4CN would be the most basic.
Another \"shortcut\" would be to look up the pka of these structures. the HIGHER the pKa, the
more basic they are; and vice versa.
Note: SInce the concentration is the same, we only worry about the intrinsic properties of these
molecules.
Varying concentrations would be a bit more mathematical.
I HOPE THIS HELPS. GOOD LUCK.
At the organic chemistry level, we can look at the basicity in terms.pdf
1. At the organic chemistry level, we can look at the basicity in terms of stability of the anions
produced.
-F, -NO2 , -C2H3O2, -OCl, and -CN
1) FIrstly, -C2H3O2, and -NO2 have resonance structures that help stablize the negative charge,
so they are pretty stable (weak base)
2) Comparing -F, -OCl, and -CN is a bit trickier, although the shortcut would just be to say that
having an extra electron on C leads to instablilty (making it reactive and basic). However, lets
look at the other two first. For -F, the atom is able to accomdate the extra electron with its space
and nuclear charge; for -OCl, the chlorine is quite electronegative and will help stabilize the
extra electron on the oxygen.
3) Out of all these structures, E) NH4CN would be the most basic.
Another "shortcut" would be to look up the pka of these structures. the HIGHER the pKa, the
more basic they are; and vice versa.
Note: SInce the concentration is the same, we only worry about the intrinsic properties of these
molecules.
Varying concentrations would be a bit more mathematical.
I HOPE THIS HELPS. GOOD LUCK
Solution
At the organic chemistry level, we can look at the basicity in terms of stability of the anions
produced.
-F, -NO2 , -C2H3O2, -OCl, and -CN
1) FIrstly, -C2H3O2, and -NO2 have resonance structures that help stablize the negative charge,
so they are pretty stable (weak base)
2) Comparing -F, -OCl, and -CN is a bit trickier, although the shortcut would just be to say that
having an extra electron on C leads to instablilty (making it reactive and basic). However, lets
look at the other two first. For -F, the atom is able to accomdate the extra electron with its space
and nuclear charge; for -OCl, the chlorine is quite electronegative and will help stabilize the
extra electron on the oxygen.
3) Out of all these structures, E) NH4CN would be the most basic.
Another "shortcut" would be to look up the pka of these structures. the HIGHER the pKa, the
more basic they are; and vice versa.
2. Note: SInce the concentration is the same, we only worry about the intrinsic properties of these
molecules.
Varying concentrations would be a bit more mathematical.
I HOPE THIS HELPS. GOOD LUCK
