boiling points of hydrides of groups 4,5 6 and 7
DESCRIPTION
H 2 O. HF. H 2 Te. SbH 3. HI. H 2 Se. NH 3. H 2 S. AsH 3. SnH 4. HCl. HBr. PH 3. GeH 4. SiH 4. CH 4. Boiling points of hydrides of groups 4,5 6 and 7. 100 0 -100 -200. Boiling point ( o C). - PowerPoint PPT PresentationTRANSCRIPT
Boiling points of hydrides of groups 4,5 6 and 7.
Boiling point
(oC)
Member of series
1st 2nd 3rd 4th
100
0
-100
-200 CH4
SiH4
SnH4
GeH4
NH3
PH3
AsH3
SbH3
HF
HClHBr
HI
H2O
H2S
H2Se
H2Te
The group 4 hydrides (CH4 to SnH4) show the expected trend ie boiling point increases as molecular mass increases.
In the group 5 hydrides it is apparent that ammonia (NH3) has a higher than expected boiling point.
In the group 6 hydrides it is apparent that water (H2O) has a higher than expected boiling point.
In the group 7 hydrides it is apparent that Hydrogen fluoride (HF) has a higher than expected boiling point.
The higher than expected boiling points are due to hydrogen bonding.