Sulphur Compounds Flashcards
(5 cards)
Alpha sulphur
Colour
Stable?
Structure
Prep
Solubility in water
Solubility in benzene alcohol and ether
Solubility in CS2
Yellow
Yes, stable at room temperature
Rhombic
Evaporating sulphur in CS2
Insoluble
Somewhat soluble
Easily soluble
ß sulphur
Color
Str
Prep
Stability
Temp at which both are stable
Colourless
Monoclinic
Heating rhombic above 369K
Stable above 369 K not below it.
369 - transition temp
SO2
Colour, odour, solubility in water
in its reaction with water and alkalies, the behavior of SO2 is very similar to ____
Moist SO2 is RA/OA?
SO2 + Fe3+ –>
+ acidified potassium permanganate–>
Colourless, pungent and highly soluble
CO2
RA
Fe2+
Decolourizes
Sulphuric acid
Colour, dense or not, feel
4 Characters of H2SO4 for chemical reaction
Normal sulphates
Acid sulphate
Colourless, dense and oily
Low volatility, strong acidic character, strong affinity for water, ability to act as an OA.
Sodium sulphate and copper sulphate
Sodium hydrogen sulphate
Why is H2SO4 used to manufacture more volatile acids?
Why does sulphuric acid remove water from organic compounds?
Because it is less volatile.
Dehydrating agent
