A compound X with molecular formula C2H4 burns with a sooty flame. It decolourises bromine water. identify X. will dissolve in water or not? will it conducts electricity in aqua solution? will it have high melting point or low melting point?
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- x will be ethane ...
- it neither be dissolve in water nor conduct electricity ..
- it is a covalent solution,so it will have low melting point...
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X is ethene (CH2=CH2).
It will neither dissolve in water nor conduct electricity because it is a covalent compound.
It has a low melting point.
- Ethene is lighter than air.
- It is a colorless gas, which is neutral to litmus and has a faintly sweet odor.
- The melting point and boiling points of ethene are 169°C and 104°C respectively
- It is highly soluble in organic solvents such as carbon tetrachloride and is sparingly soluble in water.
- When ethene is in contact with bromine water it goes under an addition reaction whereas ethane does not. As there is a reaction between ethene and bromine water ethene decolorizes bromine water.
- The complete combustion of alkenes produces carbon dioxide and water, provided there is a plentiful supply of oxygen. Incomplete combustion of alkenes occurs where oxygen is limited and produces water, carbon monoxide, and carbon (soot). This causes a smoky flame.
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