1.) Energy
Curve shifted to the right which has a lower peak and only crosses the original curve once and starts at the origin
Increase in successful collisions due to increased kinetic energy
N=pV/RT
p = 102000 V= 7.2 × 10^-5
Calculate moles and use Mr = mass/moles
Mr for PV=nRT Q was around 80 ??
Empirical formula : C3H7
Molecular formula : C6H14
C3H8 + 5O2 ----> 3CO2 + 4H2O
number of carbon atoms = 13
KJ = -33,100
Plot points and draw a line of best fit which does not extrapolate , draw line from 3 down to the line of best fit and then from this point to the y axis and read off value which was around -55.7 ???
6 marker on compounds :
C - cyclopentane as it didn't decolourise bromine water so only single bonds are present and it has the general formula for an alkene
B- pent-2-ene as it can form E-Z isomers depending on position of groups either side of double bond
A- methylbutane (cant remember numbers) resulted in two groups on one side of double bond being identical so stereoisomers didn't exist Or pent-1-ene for the same reasoning
Percentage yield = around 65 %
Concordant titres are within 0.1 cm^3 of eachother
For titration calc you had to calculate moles and obtain moles of other compound by using the ratio and then use moles = mass /Mr
Nucleophilic substitution , arrow from hydroxide ion to C bonded to Br and then an arrow from bond between C&Br to Br to form alcohol and bromide ion
Other mechanism : elimination
Other organic product : double bond at carbon 1 , cant remember name
Poly(chloroethane) has larger boiling point as it has greater van der waals due to more electrons
Plasticisers are present in PVC as it needs to be flexible to mould around wires , PVC is a strong &hard material
Skeletal formula had 38 hydrogen atoms ??
In dehydration question draw arrow from lone pair on O to H+ , missing structure was the same with positive H -O -H attached , arrow showing H2O coming off and arrow from bond between C and H to the C-C bond to form the double bond
Other alkene structures were similar but the double bond was in different places
It is rearranged as tertiary carbocation is formed which is more stable than secondary carbocations
For second 6 marker : cyclohexene can be removed by fractional distillation as it will have a much lower boiling point as it only van der waals forces between molecules. Reactants mixture both had hydrogen bonds (not sure if this is right i guessed )