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Chemistry Data Booklet--A level
9746 H2 CHEMISTRY (2008)
Data Booklet for Chemistry (Advanced Level)
TABLES OF CHEMICAL DATA
Important values, constants and standards
molar gas constant
R = 8.31 J K mo!
the Faraday constant F
the Avogadro constant
L
the Planck constant
h
speed of light in a vacuum
c
rest mass of proton, : 1-1 m
p
rest mass of neutron, ,,11 m
n
rest mass of electron, _~e me
electronic charge
e
= 9.65 x 10C mor
= 6.02 X 10 mol
= 6.63 X 10,34 J s
= 3.00 x 10 m s
= 1.67 X 10,27 kg
= 1.67 X 10,27 kg
= 9.11 X 10,31 kg
=,1.60x lOC
molar volume of gas V
m
= 22.4 dm mol at s.l.p.
V
m
= 24 dm mol under room conditions
(where s.t.p. is expressed as 101 kPa, approximately, and 273 K (0 °C))
ionic product of water
specific heat capacity of water
35
= 1.00 X 10,14 mol dm
(at 298 K 125 °CD
=4.18kJk K
(= 4.18 J g.9 K)
9746 H2 CHEMISTRY 12008)
Ionisation encrgies (1st, 2nd, 3rd and 4th) of selectcd elemcnts, in kJ mol-
Proton
Number First Sccond Third Fourth
H 1310
He 2 2370 5250
Li 3 519 7300 11800
Be I 900 1760 14800 21000
13 5 799 2420 3660 25000
C 6 1090 2350 4610 6220
N 7 1400 2860 4590 7480
0 8 1310 3390 5320 7450
F 9 1680 3370 6040 8410
Ne 10 2080 3950 6150 9290
Na 11 494 4560 6940 9540
Mg 12 736 1450 7740 10500
AI 13 577 1820 2740 11600
Si 14 786 1580 3230 4360
P 15 1060 1900 2920 4960
S 16 1000 2260 _ 3390 4540
CI 17 1260 2300 3850 5150
Ar 18 1520 2660 3950 5770
K 19 418 3070 4600 5860
Ca 20 590 1150 4940 6480
Sc 21 632 1240 2390 7110
Ti 22 661 1310 2720 4170
V 23 648 1370 2870 4600
Cr 24 653 1590 2990 4770
Mn 25 716 1510 3250 5190
Fe 26 762 1560 2960 5400
Co 27 757 1640 3230 5100
Ni 28 736 1750 3390 5400
Cu 29 745 1960 3350 5690
Zn 30 908 1730 3828 5980
Ga 31 577 1980 2960
6190
Ge 32 762 1540 3300
4390
Br 35 1140 2080 3460
4850
Sr 38 548 1060
4120 5440
Sn 50 707
1410 2940 3930
53 1010 1840 2040 4030
Ba 56 502
966 3390
Pb 82
716 1450 3080 4080
36
9746 H2 CHEMISTRY (2008)
Bond energies
(a) Diatomic molecules
Bond
Energy/kJ mor
H-J-i 436
D-O 442
NN 994
0=0 496
F-F 158
Cl-CI 244
Br-Br 193
I-
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