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Girls in STEM
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Introducing Alkynes
Types of Alkynes
Physical properties of Alkynes
1. Physical State
The first three alkynes are gases while those containing five to thirteen carbon atoms are liquids and higher alkynes are solids.
2. Melting and Boiling Points
The melting and boiling points of alkynes are quite low and increase regularly with increase in molecular mass. Alkynes are less volatile than alkanes and alkenes.
3. Solubility
Alkynes are insoluble in water but are soluble in organic solvents such as benzene, hexane, ether, carbon tetrachloride, etc.
4. Density
All alkynes are lighter than water. Their densities increase regularly with increase in molecular mass.
Table showing Physical Properties of Some Alkynes
ASSIGNMENT : INTRODUCTION TO ALKYNES AND THEIR PHYSICAL PROPERTIES ASSIGNMENT MARKS : 10 DURATION : 1 week, 3 days