Organic molecules that have the suffix-ene are unsaturated hydrocarbons that have?
a single bond
a double bond
a triple bond
an ionic bond
Correct answer is B
In chemistry, an alkene is a hydrocarbon containing a carbon–carbon double bond. Alkene is often used as synonym of olefin, that is, any hydrocarbon containing one or more double bonds.
The simplest branched-chain hydrocarbon is
ethane
ethene
propane
butane
Correct answer is D
The smallest branched alkane is isobutane. Notice that isobutane has the same molecular formula, C4H10, as n-butane but has a different structural formula.
The molecular formula of a common organic laboratory anaesthetic is
CHCl3
CHI3
CCl4
CHF3
Correct answer is A
No explanation has been provided for this answer.
Which of the following hydrocarbons is mainly used as fuel?
Methylene
Ethylene
Methane
Ethyne
Correct answer is C
No explanation has been provided for this answer.
alkene
alkanal
alkyl
alkanone
Correct answer is A
Alkenes react in the cold with pure liquid bromine, or with a solution of bromine in an organic solvent like tetrachloromethane. The double bond breaks, and a bromine atom becomes attached to each carbon. The bromine loses its original red-brown colour to give a colourless liquid.
Alkynes also react with bromine, decolorising it though not as immediate as alkenes.