PIONEER JUNIOR COLLEGE - ASKnLearn

2
5 Which of the following statements best explains why ammonia deviates from ideal
gas behaviour?
A
B
C
D
The bonds between atoms in ammonia molecules are strong.
Ammonia can be easily compressed at low temperature and high pressure.
There are strong intermolecular forces of attractions between ammonia
molecules.
The volume occupied by ammonia molecules is significant compared to the
volume occupied by the gas.
6 Iodine trichloride, ICl 3 , is made by reacting iodine with chlorine.
I 2 (s) + Cl 2 (g) → 2ICl(s) ΔH Ө = +14 kJ mol -1
ICl(s) + Cl 2 (g) → ICl 3 (s) ΔH Ө = -88 kJ mol -1
Given the data above, what is the standard enthalpy change of formation for solid
iodine trichloride?
A -60 kJ mol -1
B -74 kJ mol -1
C -81 kJ mol -1
D -162 kJ mol -1
7 When water is stirred with glucose, strong hydrogen bonds are initially formed
between glucose molecules and water molecules, but as more water is added, these
hydrogen bonds are broken.
Which graph best represents the observed temperature changes?
A
temperature
B
temperature
C
temperature
D
temperature
0
volume of
water added
0
volume of
water added
0
volume of
water added
0
volume of
water added