wrong questions

Question 1

what are ion-dipole forces

Answer 1

interactions in solutions where an ionic compound is dissolved into a polar solvent

Question 2

difference between a dipole-dipole force and an ion-dipole force

Answer 2

• dipole-dipole forces are between molecule - molecule
• ion-dipole forces are between ion - molecule

Question 3

assumptions we make in pH calculation for weak acids

Answer 3

1. [H+] = [A-]
2. [HA eq] = [HA init]

Question 4

evaluating assumptions in calculation of pH for weak acids

Answer 4

1. [H+]=[A-] : great assumption
2. [HA eq] = [HA init] : good assumption, unless Ka is higher, causing the equilibrium to be further to the right

Question 5

how do competitive inhibitors work

Answer 5

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

Question 6

features of benzene

Answer 6

• 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

Question 7

lengths of double and single bonds

Answer 7

single bonds are longer than double bonds

Question 8

reaction of group 2 hydroxides with an acid

Answer 8

M(OH)2 + HX –> MX + H2O