CHEM 1110 Test 2 Fall 2005 Page 1
Circle the correct answer letter on the answer sheet.
Some handy constants, information and equations:
( )
2
2
an
P V bn nRT
V
+ − =
1 2
2 1
v m
v m
=
N
A
= 6.022 × 10
23
mol
-1
R = 0.08206 L atm K
-1
mol
-1
V
STP
= 22.4 L mol
-1
T/K = t
°C
/°C + 273.15
Summary Table of hybrids and geometries
Number of bonds
plus lone pair
÷
2 3 4
5
6
hybrid sp sp2 sp3 sp3d sp3d2
Electronic
Geometry :
linear trigonal tetrahedral trigonal
bipyramid
octahedral
Molecular Geometry if there is:
no lone pair linear trigonal tetrahedral trigonal
bipyramid
octahedral
1 lone pair --------- bent 120
/
trigonal
pyramid
see-saw square
pyramid
2 lone pair --------- --------- bent 109
/
T-shaped square
3 lone pair --------- --------- --------- linear T-shaped
4 lone pair --------- --------- --------- --------- linear
Temperature in °C versus Water Vapor Pressure in torr
0°C 4.6 torr 10°C 9.2 torr 20°C 17.5 torr
1°C 4.9 torr 11°C 9.8 torr 21°C 18.7 torr
2°C 5.3 torr 12°C 10.5 torr 22°C 19.8 torr
3°C 5.7 torr 13°C 11.2 torr 23°C 21.1 torr
4°C 6.1 torr 14°C 12.0 torr 24°C 22.4 torr
5°C 6.5 torr 15°C 12.8 torr 25°C 23.8 torr
6°C 7.0 torr 16°C 13.6 torr 26°C 25.2 torr
7°C 7.5 torr 17°C 14.5 torr 27°C 26.7 torr
8°C 8.0 torr 18°C 15.5 torr 28°C 28.3 torr
9°C 8.6 torr 19°C 16.5 torr 29°C 30.0 torr
