1
Q
what are ion-dipole forces
A
interactions in solutions where an ionic compound is dissolved into a polar solvent
2
Q
difference between a dipole-dipole force and an ion-dipole force
A
- dipole-dipole forces are between molecule - molecule
- ion-dipole forces are between ion - molecule
3
Q
assumptions we make in pH calculation for weak acids
A
- [H+] = [A-]
- [HA eq] = [HA init]
4
Q
evaluating assumptions in calculation of pH for weak acids
A
- [H+]=[A-] : great assumption
- [HA eq] = [HA init] : good assumption, unless Ka is higher, causing the equilibrium to be further to the right
5
Q
how do competitive inhibitors work
A
have a similar shape to substrate so can fit in enzyme active site, blocking substrate bonding with enzyme thus stopping formation of E-S complexes
6
Q
features of benzene
A
- bond angle is 120 degrees due to 3 bonds around each carbon
- mixed system of double and single bonds
- two rings of delocalised electrons that exist above and below the carbon atoms. one electron from each carbon atom
7
Q
lengths of double and single bonds
A
single bonds are longer than double bonds
8
Q
reaction of group 2 hydroxides with an acid
A
M(OH)2 + HX –> MX + H2O
9
Q
A
