(Original post by Marcus4004)
Sorry about how long this has taken me.... Any explanations just ask...
Also please tell me where i went wrong thanks
ADDAB BDCCA CDDBA AACCD CCBDB ACDAB BABDB BCADD
1 a)i) 295.6 ii) 1s2 2s2 2p6 3s2 3p6 3d9
2a)i)5 ii) 3
b)2HNO2 + 4e- +4H+ ----->>>> H2N2O2 + 2H2O
3a) ionic radii
b) 6 chlorine surrounding 1 sodium vice versa
d)i) hydration of both ions and lattice enthalpy
ii) Increase in entropy
4a) Trigonal Planar
b) Lone pair of electrons from oxygen donated to form bond, ie only oxygen electrons in bond.
b) Tap water was used which contains metal ions, using deionised would have removed this problem and hence more accurate
c) Copper formed a complex as well as nickel.
6a) Separating Funnel
c) The temperature was different
d) Ethanol is soluble in water due to hydrogen bonding and hence will not partition
7a) 0.575 mol l^-1
b) Hard to see the colour change as the solution is dark brown and hence the equivalence point will be inaccurate
c) CH3COO- (aq)
8a) 500K-> 2000K
b) Since gradient is -entropy, a downwards line represents an increase in entropy.
c)Boiling point of Mg
10) a) 1
11)a)i) Hydrogen ii) Hydrogen Chloride
b)i) Acid Chlorides
iii) Faster and goes to completion as it is not an equilibrium. Also means greater yield
12a) C8 H14 S2 O2
bi) The one with 3 lines coming out of it
ii) 4 different functional groups and hence asymmetric. Hence Chiral ----> optically active
13a) To make sure that none of the reactants/ products escape on heating
c) Anti bumping Granules
d) No oily residue remains
14a)i) Electrophilic Substitution ii) Phenylamine ( The funny thing is that this question is incorrect as NaOH is required to turn the salt into the phenlyamine but oh well...
b)i) Check the internet for structure
ii) One double bond no overall charge
15a) Secondary alcohol
b) meh cba
c) Two peaks excluding TMS at 1 and 2 with the peak at 1 having a height of 6 and the peak at 2 having a height of 4.