Class knowledge
The song Chris Lee (13M) performed to the class
What is Thick of it
The functional group with nitrogen in them
what is amines, nitriles, amides
The 4 main features of transition metal
What is
V: variable oxidation state
C: colour
C: catalyst
C: complex ions
Standard conditions for core pratical 10
Temperature, pressure and concentration
Standard conditions
298k, 1 atm, 1M
Draw the reaction of elimination of 2-bromobutane with NaOH
Name the conditions and reagents
What is
Mr Pegden will mark them
Condtions: heat under reflux
Reagents: alcoholic NaOH
The topic that John Chan (13B) and Toby Anderson (13C) helped demonstrate to the class on the 28th of October 2024
What is Optical Isomerism
The process of making a grinard
what is
Condition: reflux
Reagent: dry ether with halogenoalkane
Explain if ethanoic acid or Ethanol have a higher boiling point.
What is
Ethanoic acid has a higher BP
1. Ethanoic acid has a higher MR than Ethanol, more electrons and so more London forces
2. Ethanoic acid is a dimer
Explain for a titration why is the volume of phenolphalein is controlled in CP3
What is
Phenolphalein is a weak acid
Changes pH of the solution of the HCl to be more acidic
More NaOH needed
Draw free radial substitution of propane
Name the condition
Mr Pegden will mark
Condition: UV light
Mr Pegden’s Favourite Phrase
What is Super Imposable mirror images
Name the result and testing reagent of Brady’s, Fehling’s, Tollen’s and Iodoform
Fehling’s: test for aldehydes, red to blue
Tollen’s: test for aldehydes, forms a silver mirror
Brady’s: test for aldehydes, forms a yellow ppt
Iodoform: test for c=o group next to a methyl group, yellow ppt
Write on the whiteboard the equations for entropy and Gibbs’s free energy
what is
Stotal=Ssys + Ssurr
Ssurr=-H/T
If S total is negative reaction is not feasible
Gibbs’s=H-TS
If Gibb’s is positive reaction is not feasible
Draw the Büchner funnel
What is Mr Pegden will mark
Draw any polyester of 2 repeat units
What is Mr Pegden will mark
The number of students that Mr PEGDEN lured to the sky pitch storage room to do FREE LABOUR
What are 7 students
Rein, Geetika, Sophie, Toby, Jake, John, Marykate
The similarities and difference between base and acid ester hydrolysis
what is
Differences:
Base forms an salt carboxylate, acid forms an carboxylic acid
Acid hydrolysis is reversible reaction, base hydrolysis is not reversible reaction
Base hydrolysis needs to react with an acid to form the carboxylic acid
Similarities:
Both conditions are heat under reflux
Recite Le Chatelier’s Principle in terms of pressure and temperature
WHat is
the position of equilibrium will move in such a way as to counteract the change
Increasing the pressure shifts the equilibrium to the side with less gas moles
Increasing the temperature shifts reaction to the endothermic side
What is
The time taken for hydrolysis for group 7 halogens decrease down the group.
This is because the of the bend enthalpy decreasing down the group.
It is not because of the polarity of the c-halogen group
Surprise round: Every group needs to compete
Draw the best portrait of Mr Pegden in 1 minute
What is
Mr Pegden will judge
Mr Wawn’s real name
What is Fredrick
Explain reactivity of phenol and benzene
What is
1. Phenol is more reactive than benzene
2. OH group in Phenol is an EDG
3. This activates the ring, making it a better for electrophiles to attack it
Explain the trend of 1st ionisation energy across period
What is
The value of ionisation energy increases along the period and with 2 exceptions boron and oxygen.
Boron: because of the 2p sub shell which is further away than the 2s sub shell
Oxygen: because of the spin pair repulsion of the
2px2 subshell
Explain and list out the methods to work out rate of reaction
What is
Gas syringe connected to conical flask, change of volume over time
Conical flask on a scale, change of mass over time
Conical flask with transparent solution and an tile with an X, time taken for X to not be seen, (solution forms ppt)
Draw the reaction(s) of converting Benzene to aniline
What is
Mr Pegden will mark