What type of bonds are formed between two carbon atoms in acetylene?
- AOne sigma bond and two pi bonds
- BTwo sigma bonds and one pi bond
- CThree sigma bonds
- DThree pi bonds
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The synthesis of $3-$octyne is achieved by adding a bromoalkane into a mixture of sodium amide and an alkyne. The bromoalkane and alkyne respectively are
Identify product $B$ in the following sequence of reactions.
$1,2-\text{Dibromoethane}$ $\xrightarrow[\text{alc. } KOH]{\Delta} A$ $\xrightarrow{NaNH_2} B$
$1,2-\text{Dibromoethane}$ $\xrightarrow[\text{alc. } KOH]{\Delta} A$ $\xrightarrow{NaNH_2} B$
Propyne reacts with excess $HBr$ to form the compound $Z$. The structure of $Z$ is:
The reagent used to convert an alkyne to an alkene is:
Describe the physical properties of alkynes.
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