Module 2

Question 1

H = +ve
S = +ve
High temp

Answer 1

Spontaneous

Question 2

H = +ve
S = +ve
Low temp

Answer 2

Non spontaneous

Question 3

H = -ve
S = -ve
High temp

Answer 3

Non spontaneous

Question 4

H = -ve
S = -ve
Low temp

Answer 4

Spontaneous

Question 5

H = +ve
S = -ve
Any temp

Answer 5

Non spontaneous

Question 6

H = -ve
S = +ve
Any temp

Answer 6

Spontaneous

Question 7

Rate law

Answer 7

Rate law = [conc reactant A]^x x [conc reactant B]^y

Question 8

Zeroth order

Answer 8

rate = k
no changes if concentration changes
unit = molL^-1s^-1

Question 9

First order

Answer 9

rate = k[A]
will have same affect as concentration
units = s^-1

Question 10

Second order

Answer 10

rate = [A]^2
effect changes with rate
units = Lmol^-1s^-1

Question 11

Rate determining step

Answer 11

Will always be slow step unless intermediates are involved then you need to figure out using equilibrium constant

Question 12

Oxidation

Answer 12

Loss of electrons
Electrons on RHS (products)
Form cation
More -ve reduction potential
Occurs at anode

Question 13

Reduction

Answer 13

Gain of electrons
Electrons on LHS (reactants)
Form anion
More +ve reduction potential
Occurs at cathode

Question 14

Ligand

Answer 14

Lewis bases, donate a pair of electrons to the transition metal ion
Transition metal ion is a lewis acid (accepts electrons)